Cita APA (7a ed.)

Greenbaum, S., & Quirk, R. (1990). A student's grammar of the english language: Sidney Greenbaum, Randolph Quirk. Longman.

Cita Chicago Style (17a ed.)

Greenbaum, Sidney, y Randolph Quirk. A Student's Grammar of the English Language: Sidney Greenbaum, Randolph Quirk. Harlow (Essex): Longman, 1990.

Cita MLA (9a ed.)

Greenbaum, Sidney, y Randolph Quirk. A Student's Grammar of the English Language: Sidney Greenbaum, Randolph Quirk. Longman, 1990.