एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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