Cita APA (7a ed.)

Quirk, R., Greenbaum, S., Leech, G. N., & Svartvik, J. (1973). A Grammar of Contemporary English (1st ed., 3rd impression.). Longman.

Cita Chicago Style (17a ed.)

Quirk, Randolph, Sidney Greenbaum, Geoffrey N. Leech, y Jan Svartvik. A Grammar of Contemporary English. 1st ed., 3rd impression. London: Longman, 1973.

Cita MLA (9a ed.)

Quirk, Randolph, et al. A Grammar of Contemporary English. 1st ed., 3rd impression. Longman, 1973.