1. A Study of the Value and Impact of B2B E-ommerce: The Case of Web-Based Procurement. (2002).
2. Abreham, D. (2017). Assessment of Logistics Performance of the Ethiopian Electric Power(EEP).Unpublished Master's Thesis, Addis Ababa University. Addis Ababa.
3. Ackerman, B. (1997). Practical Handbook of Warehousing 4th edn. Massachusetts: Kluwer Academic Publishers.
4. Addae, A. A. (2012). An Assessment of the Impact of Efficient Procurement Practices on the Corporate Performance of a Public University. Thesis, Kwame Nkrumah University of KScience And Technolog.
5. Analysis of outsourcing logistics service and customer satisfaction in manufacturing companies;Adebambo SO;European Journal of Logistics, Purchasing and Supply Chain Management,2016