Murphy, R. (2015). Essential grammar in use: A self-study reference and practice book for elementary learners of English : with answers. Cambridge: Cambridge University Press.
Chicago-tyylinen lähdeviittausMurphy, Raymond. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Learners of English : With Answers. Cambridge: Cambridge University Press, 2015.
MLA-viiteMurphy, Raymond. Essential Grammar in Use: A Self-study Reference and Practice Book for Elementary Learners of English : With Answers. Cambridge: Cambridge University Press, 2015.
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