Chemng’orem, D. C., and A. Chege. “Assessing the Impact of Public Procurement Procedures on Collection Management in Public University Libraries in Nairobi County, Kenya”. The International Journal of Humanities & Social Studies, vol. 5, no. 11, Nov. 2017, https://internationaljournalcorner.com/index.php/theijhss/article/view/125504.