Murphy, R. (1993). Essential grammar in use: A reference and practice book for intermediate students. Cambridge: Cambridge University.
استشهاد بنمط شيكاغوMurphy, Raymond. Essential Grammar in Use: A Reference and Practice Book for Intermediate Students. Cambridge: Cambridge University, 1993.
MLA استشهادMurphy, Raymond. Essential Grammar in Use: A Reference and Practice Book for Intermediate Students. Cambridge: Cambridge University, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.