Cita APA

Swan, M., & Walter, C. (1990). The new cambridge english course: Student 1. University of Cambridge.

Citación estilo Chicago

Swan, Michael, and Catherine Walter. The New Cambridge English Course: Student 1. New York: University of Cambridge, 1990.

Cita MLA

Swan, Michael, and Catherine Walter. The New Cambridge English Course: Student 1. New York: University of Cambridge, 1990.