APA (7th ed.) Citation

Swan, M., & Walter, C. (1990). The new Cambridge English course: Practice 1 + key. Cambridge University Press.

Chicago Style (17th ed.) Citation

Swan, Michael, and Catherine Walter. The New Cambridge English Course: Practice 1 + Key. Cambridge, United Kingdom ; New York ; Melbourne: Cambridge University Press, 1990.

MLA (9th ed.) Citation

Swan, Michael, and Catherine Walter. The New Cambridge English Course: Practice 1 + Key. Cambridge University Press, 1990.