Ghandoura, A. H., & Wilson, H. (1982). Achievement effects of teacher comments on homework in mathematics classes in Saudi Arabia. Oregon State University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ghandoura, Abbas Hassan, و Howard Wilson. Achievement Effects of Teacher Comments on Homework in Mathematics Classes in Saudi Arabia. Oregon: Oregon State University, 1982.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Ghandoura, Abbas Hassan, و Howard Wilson. Achievement Effects of Teacher Comments on Homework in Mathematics Classes in Saudi Arabia. Oregon State University, 1982.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.