Ogunka, Richard Iheanyichukwu, and Nwuchegbuo Iheanyichukwu. “Application of Generalizability Theory in Estimating Variance Components in Senior Secondary School Certificate Examination Physics Essay Questions”. Journal of Computer Adaptive Testing in Africa 1 (June 29, 2022): 48–58. Accessed January 8, 2025. https://jocatia.acata.org/index.php/jocatia/article/view/3.