Cita APA (7th ed.)

Gass, S. M., & Selinker, L. (2001). Second language acquisition: An introductory course (2a. ed.). Lawrence Erlbaum.

Cita Chicago (17th ed.)

Gass, Susan M., i Larry Selinker. Second Language Acquisition: An Introductory Course. 2a. ed. Londres: Lawrence Erlbaum, 2001.

Cita MLA (9th ed.)

Gass, Susan M., i Larry Selinker. Second Language Acquisition: An Introductory Course. 2a. ed. Lawrence Erlbaum, 2001.