Murphy Raymond. (2007). Essential grammar in use: A self-study reference and practice book for elementary students of english with answers (3rd ed.). 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 with Answers. 3rd ed. New York: 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 with Answers. 3rd ed. Cambridge university press, 2007.
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