Che Ngah, M. S. Y., M. Hashim, N. Nayan, Y. Saleh, and Z. M. Said. “ 1984-2004”. Perspektif Jurnal Sains Sosial Dan Kemanusiaan, vol. 6, no. 1, May 2014, pp. 19-35, https://ejournal.upsi.edu.my/index.php/PERS/article/view/1652.