APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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