Hewings, M. (1999). Advanced grammar in use: A self-study reference and practice book for advanced learners of English: with answers. Cambridge University.
Citace podle Chicago (17th ed.)Hewings, Martin. Advanced Grammar in Use: A Self-study Reference and Practice Book for Advanced Learners of English: With Answers. Nueva York: Cambridge University, 1999.
Citace podle MLA (9th ed.)Hewings, Martin. Advanced Grammar in Use: A Self-study Reference and Practice Book for Advanced Learners of English: With Answers. Cambridge University, 1999.
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