APA (7th ed.) Citation

Swan, M., & Walter, C. (1993). The new Cambridge English course: Student 4 : upper-intermediate (1ª ed.).

Chicago Style (17th ed.) Citation

Swan, Michael, and Catherine Walter. The New Cambridge English Course: Student 4 : Upper-intermediate. 1ª ed. Cambridge, 1993.

MLA (9th ed.) Citation

Swan, Michael, and Catherine Walter. The New Cambridge English Course: Student 4 : Upper-intermediate. 1ª ed. 1993.