Sharma, R. C., & Sapra, C. L. (1969). Wastage and stagnation in primary and middle schools in India. National Council of Educational Research and Training.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sharma, R C., و C. L. Sapra. Wastage and Stagnation in Primary and Middle Schools in India. [New Delhi]: National Council of Educational Research and Training, 1969.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sharma, R C., و C. L. Sapra. Wastage and Stagnation in Primary and Middle Schools in India. National Council of Educational Research and Training, 1969.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.