| Trask's historical linguistics RMC Millar, RL Trask Routledge, 2015 | 244 | 2015 |
| Northern and insular Scots RMC Millar Edinburgh University Press, 2007 | 129 | 2007 |
| Language, nation and power: An introduction R Millar Springer, 2005 | 125 | 2005 |
| English historical sociolinguistics RMC Millar Edinburgh University Press, 2012 | 64 | 2012 |
| System collapse, system rebirth: the demonstrative pronouns of English, 900-1350 and the birth of the definite article RMC Millar (No Title), 2000 | 55 | 2000 |
| Language, nation and power: an introduction R McColl Millar Hampshire/New York, 2005 | 49 | 2005 |
| ‘Burying alive’: unfocussed governmental language policy and Scots RMC Millar Language Policy 5, 63-86, 2006 | 44 | 2006 |
| The origins and development of Shetland dialect in light of dialect contact theories RMC Millar English World-Wide 29 (3), 237-267, 2008 | 42 | 2008 |
| Social history and the sociology of language R McColl Millar The handbook of historical sociolinguistics, 41-59, 2012 | 39 | 2012 |
| The Language of Poetry R Millar, I Currie (No Title), 1970 | 28 | 1970 |
| Modern Scots: an analytical survey RMC Millar Edinburgh University Press, 2018 | 27 | 2018 |
| Sociolinguistic History of Scotland RMC Millar Edinburgh University Press, 2020 | 25 | 2020 |
| Rethinking the traditional periodisation of Scots J Kopaczyk, RMC Millar, J Cruickshank Selected papers from the forum for research on the languages of Scotland and …, 2012 | 24 | 2012 |
| Lexical variation and attrition in the Scottish fishing communities RMC Millar Edinburgh University Press, 2014 | 22 | 2014 |
| Contact: The interaction of closely related linguistic varieties and the history of English RMC Millar Edinburgh University Press, 2016 | 19 | 2016 |
| Some suggestions for explaining the origin and development of the definite article in English R McColl Millar Pathways of change: Grammaticalization in English, 275-310, 2003 | 17 | 2003 |
| An historical national identity? The case of Scots RMC Millar Language and Identities, 247-256, 2010 | 16 | 2010 |
| System collapse, system rebirth R McColl Millar New York: Peter Lang, 2000 | 16 | 2000 |
| Authority and Identity: a sociolinguistic history of Europe before the modern age R Millar Springer, 2010 | 15 | 2010 |
| The death of Orkney Norn and the genesis of Orkney Scots. RMC Millar Scottish Language, 2010 | 12 | 2010 |
