APA (7th ed.) Citation

Quirk, R. (1995). Grammatical and lexical variance in English. Longman.

Chicago Style (17th ed.) Citation

Quirk, Randolph. Grammatical and Lexical Variance in English. London: Longman, 1995.

MLA (9th ed.) Citation

Quirk, Randolph. Grammatical and Lexical Variance in English. Longman, 1995.