APA ציטוט

Swan, M., & Walter, C. (1997). How english works: A grammar practice book with answers. Oxford: Oxford Univ. Press.

Trích dẫn kiểu Chicago

Swan, Michael, và Catherine Walter. How English Works: A Grammar Practice Book With Answers. Oxford: Oxford Univ. Press, 1997.

ציטוט MLA

Swan, Michael, và Catherine Walter. How English Works: A Grammar Practice Book With Answers. Oxford: Oxford Univ. Press, 1997.