Cita APA

Quirk, R., & Greenbaum, S. (1996). A university grammar of English (33rd imp.). Harlow: Longman.

Citación estilo Chicago

Quirk, Randolph, y Sidney Greenbaum. A University Grammar of English. 33rd imp. Harlow: Longman, 1996.

Cita MLA

Quirk, Randolph, y Sidney Greenbaum. A University Grammar of English. 33rd imp. Harlow: Longman, 1996.