Islam, M. A., & Islam, D. N. (2017). Evaluation of lead time in procurement process: A case study of ministry of health & family welfare, Bangladesh. BRAC Univeristy.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Islam, Md. Anwarul, و Dr. Nazrul Islam. Evaluation of Lead Time in Procurement Process: A Case Study of Ministry of Health & Family Welfare, Bangladesh. BRAC Univeristy, 2017.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Islam, Md. Anwarul, و Dr. Nazrul Islam. Evaluation of Lead Time in Procurement Process: A Case Study of Ministry of Health & Family Welfare, Bangladesh. BRAC Univeristy, 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.