A university grammar of English ...
Quirk, Randolph.
Greenbaum, Sidney.
[Harlow] Longman
1973
'Based on "A Grammar of contemporary English" by Randolph Quirk, Sidney Greenbaum, Geoffrey Leech, Jan Svartvik [Harlow : Longman, 1972]'
Bibliography: p.462-464. - Includes index
English language