Murphy, R. (2007). Essential grammar in use: A self-study reference and practice book for elementary students of English (3th ed. with answers.). Cambridge University Press,.
Style de citation Chicago (17e éd.)Murphy, Raymond. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Students of English. 3th ed. with answers. Cambridge [etc.] :: Cambridge University Press,, 2007.
Style de citation MLA (9e éd.)Murphy, Raymond. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Students of English. 3th ed. with answers. Cambridge University Press,, 2007.
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