AMUSA, JAMIU OLUWADAMILARE. “Appraisal of the Physics Education Programme in the National Open University of Nigeria”. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA 4, no. 1 (June 30, 2020): 79–90. Accessed October 2, 2025. https://aj.tu-varna.bg/index.php/ajtuv/article/view/158.