Dyfyniad APA

Swan, M., & Michael Swan; Catherine Walter. (1997). How English works: A grammar practice book, with answers. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

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