APA (7e ed.) Bronvermelding

Krashen, S. D. (1982). Principles and practice in second language acquisition. Pergamon.

Chicago (17e ed.) Bronvermelding

Krashen, Stephen D. Principles and Practice in Second Language Acquisition. Oxford New York: Pergamon, 1982.

MLA (9e ed.) Bronvermelding

Krashen, Stephen D. Principles and Practice in Second Language Acquisition. Pergamon, 1982.

Let op: Deze citaties zijn niet altijd 100% accuraat.