Onyemelife Ezeh Solomon, Obonyano Kingdom Nelson, and Ihieabiaobini Sylvester. “Challenges of E-Learning in Nigerian Universities, A Case Study of University of Delta, Agbor (Unidel)”. Engineering And Technology Journal 11, no. 08 (August 31, 2026): 11357–11365. Accessed September 28, 2026. https://www.everant.org/index.php/etj/article/view/3040.