Παραπομπή APA

Jessica Williams & Bill VanPatten. (2007). Theories in second language acquisition: An introduction. Routledge.

Παραπομπή Chicago Style

Jessica Williams και Bill VanPatten. Theories in Second Language Acquisition: An Introduction. New York: Routledge, 2007.

Παραπομπή MLA

Jessica Williams και Bill VanPatten. Theories in Second Language Acquisition: An Introduction. Routledge, 2007.