APA (7th ed.) Citation

Quirk, R., & Greenbaum, S. (1973). A university grammar of English. Longman.

Chicago Style (17th ed.) Citation

Quirk, Randolph, and Sidney Greenbaum. A University Grammar of English. London: Longman, 1973.

MLA (9th ed.) Citation

Quirk, Randolph, and Sidney Greenbaum. A University Grammar of English. Longman, 1973.

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