APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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