Cita APA

Swan, M., & Walter, C. (1988). The Cambridge English course 1: Practice book [with key]. Cambridge: Cambridge University Press.

Chicago Style Citation

Swan, Michael, i Catherine Walter. The Cambridge English Course 1: Practice Book [with Key]. Cambridge: Cambridge University Press, 1988.

Cita MLA

Swan, Michael, i Catherine Walter. The Cambridge English Course 1: Practice Book [with Key]. Cambridge: Cambridge University Press, 1988.