Murphy, R. (2007). Essential grammar in use with answers: A self-study reference and practice book for elementary students of English (Third Edition.). Cambridge University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Murphy, Raymond. Essential Grammar in Use with Answers: A Self-study Reference and Practice Book for Elementary Students of English. Third Edition. Cambridge: Cambridge University Press, 2007.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Murphy, Raymond. Essential Grammar in Use with Answers: A Self-study Reference and Practice Book for Elementary Students of English. Third Edition. Cambridge University Press, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.