Cita APA (7a ed.)

Quirk, R. (1995). Grammatical & Lexical: Variance in english. Longman.

Cita Chicago Style (17a ed.)

Quirk, Randolph. Grammatical & Lexical: Variance in English. London ; New York: Longman, 1995.

Cita MLA (8a ed.)

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