Ilukena, M. A., L. Luwango, and C. M. Ausiku. “Why student–teachers Fail the Basic Mathematics Module in First Year of Study at Rundu Campus of the University of Namibia?”. Namibia Educational Reform Forum Journal, vol. 26, no. 1, Feb. 2019, pp. 41-51, https://journals.nied.edu.na/index.php/nerfj/article/view/126.