Cita APA (7th ed.)

Eastwood, J. (2006). Oxford guide to english grammar (Sixth impression.). Oxford University Press.

Cita Chicago (17th ed.)

Eastwood, John. Oxford Guide to English Grammar. Sixth impression. New Delhi: Oxford University Press, 2006.

Cita MLA (9th ed.)

Eastwood, John. Oxford Guide to English Grammar. Sixth impression. Oxford University Press, 2006.