Style de citation APA (7e éd.)

KRASHEN, S. D., & TERRELL, T. D. (1984). The natural approach: Language acquisition in the classroom. Pergamon Press.

Style de citation Chicago (17e éd.)

KRASHEN, Stephen D., et Tracy D. TERRELL. The Natural Approach: Language Acquisition in the Classroom. Oxford: Pergamon Press, 1984.

Style de citation MLA (9e éd.)

KRASHEN, Stephen D., et Tracy D. TERRELL. The Natural Approach: Language Acquisition in the Classroom. Pergamon Press, 1984.