the Graduate Management Admission Council. (2009). The official guide for GMAT review: The only study guide with 800 real GMAT questions and their answers by the creators of the test (elevnth edition.). Blackwell.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)the Graduate Management Admission Council. The Official Guide for GMAT Review: The Only Study Guide with 800 Real GMAT Questions and Their Answers by the Creators of the Test. elevnth edition. Malden, Mass. [u.a.]: Blackwell, 2009.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)the Graduate Management Admission Council. The Official Guide for GMAT Review: The Only Study Guide with 800 Real GMAT Questions and Their Answers by the Creators of the Test. elevnth edition. Blackwell, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.