Martin Hewings. (1999). Advanced grammar in use: A self-study reference and practice book for advanced learners of English with answers. Cambridge, Uk: Cambridge University Press.
Chicago-tyylinen lähdeviittausMartin Hewings. Advanced Grammar in Use: A Self-study Reference and Practice Book for Advanced Learners of English With Answers. Cambridge, Uk: Cambridge University Press, 1999.
MLA-viiteMartin Hewings. Advanced Grammar in Use: A Self-study Reference and Practice Book for Advanced Learners of English With Answers. Cambridge, Uk: Cambridge University Press, 1999.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.