Cita APA (7a ed.)

Eastwood, J. (1984). A basic english grammar: Exercices : with key. Oxford University Press.

Cita Chicago Style (17a ed.)

Eastwood, John. A Basic English Grammar: Exercices : With Key. Oxford: Oxford University Press, 1984.

Cita MLA (9a ed.)

Eastwood, John. A Basic English Grammar: Exercices : With Key. Oxford University Press, 1984.