Khan, Z. H., & Khair, D. R. (2014). Administrative costs in open tendering method in public works department: Improving purchasing performance. BRAC University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Khan, Zahid Hossain, و Dr. Rizwan Khair. Administrative Costs in Open Tendering Method in Public Works Department: Improving Purchasing Performance. BRAC University, 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Khan, Zahid Hossain, و Dr. Rizwan Khair. Administrative Costs in Open Tendering Method in Public Works Department: Improving Purchasing Performance. BRAC University, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.