Hewings, M. (1999). Advanced grammar in use: A self-study reference and practice book for advanced learnes of Eglish: with answers. Cambridge: Cambridge University.
استشهاد بنمط شيكاغوHewings, Martin. Advanced Grammar in Use: A Self-study Reference and Practice Book for Advanced Learnes of Eglish: With Answers. Cambridge: Cambridge University, 1999.
MLA استشهادHewings, Martin. Advanced Grammar in Use: A Self-study Reference and Practice Book for Advanced Learnes of Eglish: With Answers. Cambridge: Cambridge University, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.