APA
Leech G. N., Svartvik J. j. a. & Grammar of contemporary English. (1994). A communicative grammar of English. London: Longman.
Chicago
Leech Geoffrey N, Svartvik Jan jt author and Grammar of contemporary English. 1994. A communicative grammar of English. London: Longman.
Harvard
Leech G. N., Svartvik J. j. a. and Grammar of contemporary English. (1994). A communicative grammar of English. London: Longman.
MLA
Leech Geoffrey N, Svartvik Jan jt author and Grammar of contemporary English. A communicative grammar of English. London: Longman. 1994.