Hammond, Matthew H., "The Durward family in the thirteenth century", in Steve Boardman and Alasdair Ross (eds. ), The Exercise of Power in Medieval Scotland, c.1200–1500'', (Dublin/Portland, 2003).
This reference provides information about Matthew Hammond's work on the Durward family within the context of medieval Scottish power dynamics, as presented by Steve Boardman and Alasdair Ross in their book "The Exercise of Power in Medieval Scotland".