Cita APA (7a ed.)

Swan, M., & Walter, C. (1991). The CAMBRIGDE English Course. 3 Student's Book (1a reimp.). University Press.

Cita Chicago Style (17a ed.)

Swan, Michael, y Catherine Walter. The CAMBRIGDE English Course. 3 Student's Book. 1a reimp. Cambrigde: University Press, 1991.

Cita MLA (9a ed.)

Swan, Michael, y Catherine Walter. The CAMBRIGDE English Course. 3 Student's Book. 1a reimp. University Press, 1991.