Ku Halim, Ku Hasnan, et al. “UMNO DAN KRISIS; PENELITIAN KEPADA KRISIS DALAMAN-KES TERPILIH”. Journal of Techno-Social, vol. 4, no. 2, Oct. 2012, https://publisher.uthm.edu.my/ojs/index.php/JTS/article/view/1435.