Egharevba, J., & 		Iyamu, E.
(2020).
 Promoting the Effective Teaching and Learning of Social Studies through the Use of Mastery Learning Strategies in the 21st Century.
<em>NIU Journal Of Social Sciences, 6</em>(2), 321-326.
Retrieved from <a href="https://kampalajournals.ac.ug/ojs/index.php/niujoss/article/view/876" target="_new">https://kampalajournals.ac.ug/ojs/index.php/niujoss/article/view/876</a>