Cita APA

May, P. (2000). Knockout first certificate: Student's book (5th ed.). Oxford: Oxford U. P..

Citación estilo Chicago

May, Peter. Knockout First Certificate: Student's Book. 5th ed. Oxford: Oxford U. P., 2000.

Cita MLA

May, Peter. Knockout First Certificate: Student's Book. 5th ed. Oxford: Oxford U. P., 2000.