Cita APA

May, P. (1999). Knockout first certificate: Student's book (5th ed.). Oxford: Oxford University Press.

Chicago Style Citation

May, Peter. Knockout First Certificate: Student's Book. 5th ed. Oxford: Oxford University Press, 1999.

Cita MLA

May, Peter. Knockout First Certificate: Student's Book. 5th ed. Oxford: Oxford University Press, 1999.