A Grammar of contemporary English / Randolf Quirk [et al.], 1972. The English language
and images of matter / Randolph Quirk, 1972
A comprehensive grammar of the English language / Randolph Quirk, Sidney Greenbaum,
Geoffrey Leech... [et al.] ; index by David Crystal, cop. 1985
Bibliogr., GB (CD), 1997-06
Internet, http://lccn.loc.gov/n50050568, 2012-02-06
Information trouvée : Grammatical and lexical variance in English, 1995 : CIP t.p. (Randolph Quirk) data
sheet (b. 12 July 1920)