APA (7th ed.) Citation

Swan, M., & Baker, D. (2008). Grammar scan answer key (Third edition.). Oxford University Press.

Chicago Style (17th ed.) Citation

Swan, Michael, and David Baker. Grammar Scan Answer Key. Third edition. New York: Oxford University Press, 2008.

MLA (9th ed.) Citation

Swan, Michael, and David Baker. Grammar Scan Answer Key. Third edition. Oxford University Press, 2008.