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.
Dyfyniad Arddull ChicagoMartin 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.
Dyfyniad MLAMartin 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.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.