From 1962 to 1993 he was Professor of Scottish History and Literature at the University of Glasgow. On giving up his professorship, he became Clerk of Senate and Dean of Faculties, retiring from the University in 2000. From 2001 he was Emeritus Professor of Scottish History and Literature, but continued to publish on the history of Scotland in the Middle Ages.
- Scotland: The Making of the Kingdom. Edinburgh: Edinburgh University Press, 1973.
- The Kingship of the Scots: Succession and Independence 842–1292. Edinburgh: Edinburgh University Press, 2002.
- Broun, Dauvit (12 January 2018). "Obituary - Archie Duncan, historian and professor of Scottish history at Glasgow University". The Herald. Glasgow. Retrieved 12 January 2018.
- British Academy biographical note
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