Natural language and computational linguistics - an introduction. - Colin Beardon; David Lumsden; Geoff Holmes (Ellis Horwood, 1991)

A View of VisualWorks: ParcPlace Smalltalk-80. - David Lumsden (TOOLS (12/9), 1993)

The Relationship Between Speaker's Reference and Semantic Reference. - David Lumsden (Lang. Linguistics Compass, 2010)