APA (7th ed.) Citation

Quirk, R., & Greenbaum, S. (2004). A university grammar of English (7th ed.). Person education.

Chicago Style (17th ed.) Citation

Quirk, Randolph, and Sidney Greenbaum. A University Grammar of English. 7th ed. Person education, 2004.

MLA (9th ed.) Citation

Quirk, Randolph, and Sidney Greenbaum. A University Grammar of English. 7th ed. Person education, 2004.

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