Cita APA (7a ed.)

Swan, M., & Walter, C. (2001). The good grammar book: A grammar practice book for elementary to lower-intermediate students of English : with answers. Oxford University Press.

Cita Chicago Style (17a ed.)

Swan, Michael, y Catherine Walter. The Good Grammar Book: A Grammar Practice Book for Elementary to Lower-intermediate Students of English : With Answers. Oxford: Oxford University Press, 2001.

Cita MLA (9a ed.)

Swan, Michael, y Catherine Walter. The Good Grammar Book: A Grammar Practice Book for Elementary to Lower-intermediate Students of English : With Answers. Oxford University Press, 2001.