Mbugua, Purity, and Paul Ndavi. “Effectiveness of Pop-Up Advertisements As Advertising Tools: The Case of the Co-Operative University of Kenya”. African Journal of Co-operative Development and Technology 6, no. 1 (August 3, 2021): 11-17. Accessed December 22, 2024. https://journals.cuk.ac.ke/index.php/12/article/view/41.