Dyfyniad APA

Swan, M. (2009). How english works: A grammar practice book with answers. Oxford: Oxford University Press.

Dyfyniad Arddull Chicago

Swan, Micheal. How English Works: A Grammar Practice Book With Answers. Oxford: Oxford University Press, 2009.

Dyfyniad MLA

Swan, Micheal. How English Works: A Grammar Practice Book With Answers. Oxford: Oxford University Press, 2009.

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