Cita APA

O'sullivan, D., Swan, M., & Walter, C. (1992). C: The New Cambridge English Course Intermediate. Cambridge: Cambridge University.

Citación estilo Chicago

O'sullivan, Desmon, Michael Swan, y Catherine Walter. C: The New Cambridge English Course Intermediate. Cambridge: Cambridge University, 1992.

Cita MLA

O'sullivan, Desmon, Michael Swan, y Catherine Walter. C: The New Cambridge English Course Intermediate. Cambridge: Cambridge University, 1992.