Aljabr, A. A. A., & Snyder, F. (1987). The views of parents, teachers, and principals toward public school corporation homework policy in Indiana. Indiana State University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Aljabr, Abdullah Abdullatif A., و Fred Snyder. The Views of Parents, Teachers, and Principals Toward Public School Corporation Homework Policy in Indiana. Indiana: Indiana State University, 1987.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Aljabr, Abdullah Abdullatif A., و Fred Snyder. The Views of Parents, Teachers, and Principals Toward Public School Corporation Homework Policy in Indiana. Indiana State University, 1987.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.