Cita APA (7a ed.)

Yule G. George. (2008). Oxford Practice Grammar Advanced with answers. New York, Oxford University Press, 2008.

Cita Chicago Style (17a ed.)

Yule G. George. Oxford Practice Grammar Advanced with Answers. New York, Oxford University Press, 2008, 2008.

Cita MLA (9a ed.)

Yule G. George. Oxford Practice Grammar Advanced with Answers. New York, Oxford University Press, 2008, 2008.