Ajai, J. T., S. . A. O. Iyekekpolor, and H. R. Hanawa. “Effect of Eng-Hau Medium of Instruction on Upper-Basic students’ Achievement in Algebra”. Journal of Science and Education (JSE), vol. 3, no. 1, Sept. 2022, pp. 40-50, doi:10.56003/jse.v3i1.144.