Cita APA (7th ed.)

Gass, S. M., & Schachter, J. (1989). Linguistic perspectives on second language acquisition. Cambridge University Press.

Cita Chicago (17th ed.)

Gass, Susan M., i Jacquelyn Schachter. Linguistic Perspectives on Second Language Acquisition. Cambridge: Cambridge University Press, 1989.

Cita MLA (9th ed.)

Gass, Susan M., i Jacquelyn Schachter. Linguistic Perspectives on Second Language Acquisition. Cambridge University Press, 1989.