Cita APA (7a ed.)

Swan, M., & Walter, C. (1986). The Cambridge English course. 2 Practice book. Cambridge University Press.

Cita Chicago Style (17a ed.)

Swan, Michael, y Catherine Walter. The Cambridge English Course. 2 Practice Book. Cambridge: Cambridge University Press, 1986.

Cita MLA (9a ed.)

Swan, Michael, y Catherine Walter. The Cambridge English Course. 2 Practice Book. Cambridge University Press, 1986.