Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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