Cita APA (7th ed.)

Eastwood, J. (2006). Oxford practice grammar intermediate with answers. Oxford University Press.

Cita Chicago (17th ed.)

Eastwood, John. Oxford Practice Grammar Intermediate with Answers. Inglaterra: Oxford University Press, 2006.

Cita MLA (9th ed.)

Eastwood, John. Oxford Practice Grammar Intermediate with Answers. Oxford University Press, 2006.