APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

Gass, Susan M., och Larry Selinker. Second Language Acquisition: An Introductory Course. 3rd ed. New York: Routledge/Taylor and Francis Group, 2008.

MLA-referens (8:e uppl.)

Gass, Susan M., och Larry Selinker. Second Language Acquisition: An Introductory Course. 3rd ed. Routledge/Taylor and Francis Group, 2008.