APA-viite (7. p.)

Johnson, D. M. (1991). Approaches to research in second language learning. Longman.

Chicago-viite (17. p.)

Johnson, Donna M. Approaches to Research in Second Language Learning. New York: Longman, 1991.

MLA-viite (9. p.)

Johnson, Donna M. Approaches to Research in Second Language Learning. Longman, 1991.