APA (7th ed.) Citation

Quirk, R. (1972). A Grammar of contemporary English. Seminar Press.

Chicago Style (17th ed.) Citation

Quirk, Randolph. A Grammar of Contemporary English. New York: Seminar Press, 1972.

MLA (9th ed.) Citation

Quirk, Randolph. A Grammar of Contemporary English. Seminar Press, 1972.

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