Hewings, M. (1999). Advanced grammar in use: A self-study reference and practice book for advanced learners of English: with answers. Cambridge University.
Chicago-Zitierstil (17. Ausg.)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.
MLA-Zitierstil (9. Ausg.)Hewings, Martin. Advanced Grammar in Use: A Self-study Reference and Practice Book for Advanced Learners of English: With Answers. Cambridge University, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.