Cita APA (7a ed.)

May, P. (1999). Knockout: First certificate. Student's book (1st published, 3rd impression.). Oxford University Press.

Cita Chicago Style (17a ed.)

May, Peter. Knockout: First Certificate. Student's Book. 1st published, 3rd impression. Oxford [etc.]: Oxford University Press, 1999.

Cita MLA (9a ed.)

May, Peter. Knockout: First Certificate. Student's Book. 1st published, 3rd impression. Oxford University Press, 1999.