Cita APA

Eastwood, J., & Mackin, R. (1987). A basic english grammar ([1st ed., 9th imp.].). Oxford: Oxford University Press.

Citación estilo Chicago

Eastwood, John, and Ronald Mackin. A Basic English Grammar. [1st ed., 9th imp.]. Oxford: Oxford University Press, 1987.

Cita MLA

Eastwood, John, and Ronald Mackin. A Basic English Grammar. [1st ed., 9th imp.]. Oxford: Oxford University Press, 1987.