APA (7th ed.) Citation

Quirk, R. (1974). A Grammar of contemporary English. Longman.

Chicago Style (17th ed.) Citation

Quirk, Randolph. A Grammar of Contemporary English. London: Longman, 1974.

MLA (9th ed.) Citation

Quirk, Randolph. A Grammar of Contemporary English. Longman, 1974.

Warning: These citations may not always be 100% accurate.