Murphy, R. (2007). Essential grammar in use: A self-study reference and practice book for elementary students of english with answers (3rd ed.). Cambridge University.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Murphy, Raymond. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Students of English with Answers. 3rd ed. Cambridge: Cambridge University, 2007.
MLA -ийн эшлэл (9 дэх хэвлэлт)Murphy, Raymond. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Students of English with Answers. 3rd ed. Cambridge University, 2007.
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