Cita APA (7a ed.)

Swan, M., & Walter, C. (1984). The Cambridge english course. Cambridge University Press.

Cita Chicago Style (17a ed.)

Swan, Michael, y Catherine Walter. The Cambridge English Course. Cambridge: Cambridge University Press, 1984.

Cita MLA (8a ed.)

Swan, Michael, y Catherine Walter. The Cambridge English Course. Cambridge University Press, 1984.