International Conference on E-Procurement Seoul, Korea, United Nations. Economic and Social Commission for Asia and the Pacific, Asian Development Bank. Institute, & Korea (South). Public Procurement Service. (2006). E-procurement. United Nations ESCAP.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)International Conference on E-Procurement Seoul, Korea, United Nations. Economic and Social Commission for Asia and the Pacific, Asian Development Bank. Institute, و Korea (South). Public Procurement Service. E-procurement. Bangkok: United Nations ESCAP, 2006.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)International Conference on E-Procurement Seoul, Korea, et al. E-procurement. United Nations ESCAP, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.