Here are some preliminary bibliographical references. This page is updated regularly.

Aitken, A. J., Macafee; Caroline, 2002, The Older Scots Vowels: A History of the Stressed Vowels of Older Scots from the Beginnings to the Eighteenth Century., Edinburgh, Scottish Text Society, Older Scots Phonology (vowels)
Aitken, A.J., 1981, The good old Scots tongue. Does Scots have an identity?.Haugen, E., J.D. McClure and D. Thomson, Minority languages today, Edinburgh, Edinburgh University Press, 72-90Scots identity
Aitken, A.J., 1989, The lexicography of Scots two hundred years since: Ruddiman and his successors.Mackenzie, J. Lachlan and Richard Todd, In other words: Transcultural studies in philology, translation and lexicology, Dordrecht, Foris, 235-245Scots lexicography
Aitken, A.J., 1994, Progress in the study of Modern Scots since 1948.Fenton, A. and D. McDonald, Studies in Scots and Gaelic, Edinburgh, Canongate, 1-40History of Scots studies
Aitken, A.J.; McIntosh, Angus; Páulson, Hermann, 1971, Edinburgh studies in English and Scots., London , Longman, Scots and English linguistics
Benskin, Michael; Samuels, M.L., 1981, So meny people, longages and tonges: philological essays in Scots and Mediaevel English presented to Angus McIntosh., Edinburgh, Edinburgh University Press, Scots and Middle English
Bradley, Henry, 1913, On the relations between spoken and written language with special reference to English. Paper read at the International Historical Congress.Proceedings of the British Academy, 6, London, British Academy, Graphophonology
Britton, Derek, 1992, Of contreth matters.Neophiolologus, 76, 283-289Etymology
Cleishbotham the Younger, 1858, A handbook of the Scottish Language., Edinburgh, J.L. Smith, Scots dictionary
Dossena, Marina; Lass, Roger, 2009, Studies in English and European historical dialectology., Bern, Peter Lang, Historical dialectology
Fenton, Alexander; MacDonald, Donald, A., 1994, Studies in Scots and Gaelic: Procedings of the Third International Conference on the Languages of Scotland., Edinburgh, Cannongate, Scots and Gaelic linguistics
Fisiak, Jacek, 1995, Medieval dialectology., Berlin, Mouton de Gruyter, Historical dialectology
Görlach, Manfred, 1984, Scots and Low German: The social history of two minority languages.Görlach, Manfred, Focus on: Scotland, Amsterdam, John Benjamins, 1-18Scots identity and history
Graham, William, 1977, The Scots word book., Edinburgh, The Ramsay Head Press, Scots-English dictionary
Grant, William, 1913, The pronunciation of English in Scotland., Cambridge , Cambridge University Press, Phonology of Scottish English
Jamieson, John, 1875, Supplement to the Etymological Dictionary of the Scottish Language.Vol 1, Edinburgh, Edinburgh University Press, Scots etymological dictionary
Johnston, Paul, 1997, Older Scots phonology and its regional variation.Jones, Charles, The Edinburgh history of the Scots language, Edinburgh, Edinburgh University Press, 47-111Scots phonology
Kay, Christian J.; Mackay, Margret A., 2005, Perspectives on the Older Scottish Tongue: a celebration of DOST., Edinburgh, Edinburgh University Press, Scots lexicology and lexicography
King, Anne, 1997, The inflectional morphology of Older Scots.Jones, Charles, The Edinburgh history of the Scots language, Edinburgh, Edinburgh University Press, 156-181Scots morphology
Kniezsa, Veronika, 1976, To the phonetical aspects of the development of the standard Scots vowel system.Acta Linguistica Academiae Scientarum Hungaricae, 26/3-4), 457-466Scots phonology
Laing, Margaret; Williamson, Keith, 1994, Speaking in our tongues: Medieval dialectology and related disciplines., Cambridge, D.S. Brewer, Historical dialectology
Macafee, Caroline, 1989, Middle Scots dialects - extrapolating backwards.McClure, J. D. and M. Spiller, Bryght lanternis: Essays on the language and literature of medieval and renaissance Scotland, Aberdeen, Aberdeen University Press, 429-441Scots dialectology
Macafee, Caroline; Macleod, Iseabail, 1987, The Nuttis Schell: Essays on the Scots Language presented to A. J. Aitken., Aberdeen, Aberdeen University Press, Scots linguistics
Mackie, Alexander, 1881, Scotticisms arranged and corrected., London, Hamilton, Adams and Co., Scots glossary
Macleod, Iseabail; McClure, J. Darreck, 2012, Scotland in definition: a history of Scottish dictionaries., Edinburgh , John Donald, Scots lexicography
MacQueen, John, 1970, Ballattis of Luve., Edinburgh, Edinburgh University Press, Scots poetry
Mather, J.Y.; Spietel, H.H., 1985, The linguistic atlas of Scotland.Vol 1, London, Croom Helm, Scottish dialectology
Mather, J.Y.; Spietel, H.H., 1977, The linguistic atlas of Scotland.Vol 2, Hamden, CT, Archon Books, Scottish dialectology
Mather, J.Y.; Spietel, H.H., 1986, The linguistic atlas of Scotland: Phonology.Vol 3, London, Croom Helm, Scottish dialectology
McClure, J. Derrick, 1994, English in Scotland.Burchfield, Robert, The Cambridge history of the English language. Vol. 5. English in Britain and overseas: Origins and development., Cambridge, Cambridge University Press, 23-93Scots and Scottish English
McIntosh, Angus, 1961, An introduction to a Survey of Scottish dialects., Edinburgh , Edinburgh University Press, Scots dialectology
McIntosh, Angus, 1949, On planning a dialect survey of Scotland., Ann Arbour, Scottish dialectology
McIntosh, Angus, 1954, The study of Scots in relation to other subjects.Orbis, 3(1), , 173-177Scots dialectology
McIntosh, Angus, 1989, The dialectology of mediaeval Scots: Some possible approaches to its study.McIntosh, Angus, M. L. Samuels and Margaret Laing, Middle English dialectology: Essays on some principles and problems, Aberdeen, Aberdeen University Press, 81-85Scots dialectology
McIntosh, Angus, 1989, Is Sir Tristem an English or a Scottish poem?.Mackenzie, J. Lachlan and Richard Todd, In other words: Transcultural studies in philology, translation and lexicology, Dordrecht, Foris, 85-95Manuscript studies
McIntosh, Angus; Samuels, M.L.; Benskin, M. , 1987, Guide to A linguistic atlas of Late Mediaeval English.A linguistic atlas of Late Mediaeval English, Aberdeen, Aberdeen University Press, 2-23Middle English dialects
Meurman-Solin, Anneli, 1997, Change from above or below? Patterns and directions of change in the history of Scottish English., Scots phonology and morphology
Murakami, Ryuta, 1988, A catalogue of early northern Middle English manuscripts.English Language and English Literature, 29, 61-123Middle English bibliography
Ogura, Mieko, 1990, Dynamic dialectology: A study of language in time and space., Tokyo, Kenkyusha, Historical dialectology
Parvinen, Maija, 1998, Scandinavian Loanwords in Scots: a study of Linmill stories by Robert McLellan., Turku, University of Turku, Scots Lexis
Robinson, Mairi, 1985, The Concise Scots Dictionary., Aberdeen, Aberdeen University Press, Scots dictionary
Simpson, Grant G., 1973, Scottish handwriting 1150-1650., Aberdeen, Aberdeen University Press, Scottish paleography
Smith, Jeremy J., 2012, Older Scots: A linguistic reader., Edinburgh , Scottish Text Society, Scots reader and commentary
Speitel, Hans-Henning, 1969, An areal typology of isoglosses: Isoglosses near the Scottish-English border.Zeitschrift für Dialektologie und Linguistik, 36, 49-66Scots dialectology
Speitel, Hans-Henning, 1972, The stressed vowels in Standard Scottish English: A reply to D. Baehr.Zeitschrift für Dialektologie und Linguistik, 39, 215-216Scottish English phonology
Speitel, Hans-Henning, 1975, Caller Ou!' An Edinburgh fishwives' cry and an old Scottish sound change.Scottish Studies, 19, 69-73Etymology
Speitel, Hans-Henning, 1981, The geographical position of the Scots dialect in relation to the Highlands of Scotland.Benskin, Michael and M.L. Samuels, So meny people longages and tonges: Philological essays in Scots and mediaeval English presented to Angus McIntosh, Edinburgh, Edinburgh University Press, 107-129Scots dialectology
Speitel, Hans-Henning; Mather, James Y., 1968, Schottische Dialektologie: Zur Terminologie.Schmitt, Ludwig Erich, Germanische Dialektologie: Festschrift für Walther Mitzka zum 80. Geburtstag, Wiesbaden, Franz Steiner, 520-541Scots dialectology
Stevenson, James A. C.; Macleod, Iseabail, 1989, Scoor-oot: A dictionary of Scots words and phrases in current use., London, Athlone, Scots dictionary
Warrack, Alexander; Grant, William, 1911, A Scots dialect dictionary., London, Chambers, Scots dialect dictionary
Warrack, Alexander; Kirkpatrick, Betty, 1988, The Concise Scots Dictionary., Poole, New Orchard, Scots dictionary
Williams, Irene F., 1912, Phonetics for Scottish students., Glasgow, University of Glasgow, Scottish phonetics
Williams, O. T., 1910, The development of AI and EI in Middle Scotch.Transactions of the Philological Society, 285-287Scots phonology
Williams, O. T., 1911, On A, Ā, and Æ in the rimes of Barbour's Brus and in Modern Scotch dialects.Transactions of the Philological Society, 7-26Scots phonology
Williamson, Keith, 2006, Further reflections on the outcomes of Nerthern Fronting in Older Scots.Scots phonology
Young, Douglas, 1946, "Plastic Scots" and the Scottish literary tradition: An authoritative introduction to a controversy.Glasgow, Dunedin Society, 1-32Scottish literature