APA-referens (7:e uppl.)

Greenbaum, S. (1996). An introduction to English grammar. Longman.

Chicago-referens (17:e uppl.)

Greenbaum, Sidney. An Introduction to English Grammar. Harlow, Essex, Eng: Longman, 1996.

MLA-referens (9:e uppl.)

Greenbaum, Sidney. An Introduction to English Grammar. Longman, 1996.