APA (7th ed.) Zitazioa

Gass, S. M., & Selinker, L. (2008). Second language acquisition: An introductory course (3a. ed.). Taylor and Francis.

Chicago Style (17th ed.) Zitazioa

Gass, Susan M., eta Larry Selinker. Second Language Acquisition: An Introductory Course. 3a. ed. Londres: Taylor and Francis, 2008.

MLA (9th ed.) Zitazioa

Gass, Susan M., eta Larry Selinker. Second Language Acquisition: An Introductory Course. 3a. ed. Taylor and Francis, 2008.