Cita APA (7a ed.)

Eastwood, J., & Mackin, R. (1991). A basic english grammar (Spanish edition, [7th. imp.].). Oxford University Press.

Cita Chicago Style (17a ed.)

Eastwood, John, y Ronald Mackin. A Basic English Grammar. Spanish edition, [7th. imp.]. Oxford: Oxford University Press, 1991.

Cita MLA (9a ed.)

Eastwood, John, y Ronald Mackin. A Basic English Grammar. Spanish edition, [7th. imp.]. Oxford University Press, 1991.