Hussain, L. ., A. . Jamil, I. . Ameen, and K. . Bakhsh. “The Effects of Classroom Interaction on Students’ Academic Achievement at Secondary School Level”. Mediterranean Journal of Social Sciences, vol. 2, no. 3, Sept. 2011, p. 492, https://www.richtmann.org/journal/index.php/mjss/article/view/10868.