MAJEMITE, H., P. O. DANIA, and E. C. OGHENEAKOKE. “Effects of Group-Based Mastery Instructional Strategy on Academic Performance of Social Studies Students in Delta State Upper Basic Schools”. GPH-International Journal of Educational Research, Vol. 7, no. 08, Sept. 2024, pp. 102-13, doi:10.5281/zenodo.13856046.