APA aipamena

O'sullivan, D., Swan, M., & Walter, C. (1993). C: The New Cambridge English Course Upper-Intermediate. Cambridge: Cambridge University.

Chicago Style aipamena

O'sullivan, Desmon, Michael Swan, và Catherine Walter. C: The New Cambridge English Course Upper-Intermediate. Cambridge: Cambridge University, 1993.

MLA aipamena

O'sullivan, Desmon, Michael Swan, và Catherine Walter. C: The New Cambridge English Course Upper-Intermediate. Cambridge: Cambridge University, 1993.