R. U. Etiubon, A. H. Etiubon, and I. W. Akpan, “Computer Tutorials and Drill-Practice Strategies on Senior Science Students’ Academic Achievement on Energy Transformation in Nature, Uyo, Nigeria”, Int J Innov Educ Res, vol. 9, no. 7, pp. 387–401, Jul. 2021, doi: 10.31686/ijier.vol9.iss7.3230.