APA (7th ed.) Citation

Quirk, R. (1972). A grammar of contemporary English / by R. Quirk [and others]. Longman.

Chicago Style (17th ed.) Citation

Quirk, Randolph. A Grammar of Contemporary English / by R. Quirk [and Others]. Longman, 1972.

MLA (9th ed.) Citation

Quirk, Randolph. A Grammar of Contemporary English / by R. Quirk [and Others]. Longman, 1972.

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