Okinyi, Naomy Kemunto, Evans Kwendo, and Fredrick N. Kiongera. “Effect of Pre-Contracting Procurement Practices on Supply Chain Performance of Road Authorities in Kakamega County, Kenya”. African Journal of Empirical Research 4, no. 2 (November 6, 2023): 807–814. Accessed December 16, 2025. https://ajernet.net/ojs/index.php/ajernet/article/view/160.