Cita APA (7a ed.)

Quirk, R. (1974). A grammar of contemporary English. Longman.

Cita Chicago Style (17a ed.)

Quirk, Randolph. A Grammar of Contemporary English. London: Longman, 1974.

Cita MLA (9a ed.)

Quirk, Randolph. A Grammar of Contemporary English. Longman, 1974.