Ibrahim, M. Y. ., M. R. Yusof, M. F. M. . Yaakob, and Z. . Othman. “Communication Skills: Top Priority of Teaching Competency”. International Journal of Learning, Teaching and Educational Research, vol. 18, no. 8, Aug. 2019, pp. 17-30, http://www.ijlter.myres.net/index.php/ijlter/article/view/519.