Swan, M., & Baker, D. (2008). Grammar scan answer key (Third edition.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Swan, Michael, agus David Baker. Grammar Scan Answer Key. Third edition. New York: Oxford University Press, 2008.
Lua MLA (9ú heag.)Swan, Michael, agus David Baker. Grammar Scan Answer Key. Third edition. Oxford University Press, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.