O. C. . Chukwuemerie, E. . Akpan, and P. U. . Okoye, “Experiences, challenges and acceptance of e-learning by adult learners in sandwich programme of Nnamdi Azikiwe University Awka, Nigeria”, Eureka: J. of Educ. Res., vol. 2, no. 2, pp. 90–97, Jan. 2024.