Cita APA

Swan, M., & Walter, C. (1991). The Cambridge English Course: T. I. Practice Book. New York: Cambridge University Press.

Citación estilo Chicago

Swan, Michael, y Catherine Walter. The Cambridge English Course: T. I. Practice Book. New York: Cambridge University Press, 1991.

Cita MLA

Swan, Michael, y Catherine Walter. The Cambridge English Course: T. I. Practice Book. New York: Cambridge University Press, 1991.