Gan, Ching Chuan. “The Ultra Vires Doctrine In Administrative Law: A Malaysian Perspective”. Journal of Malaysian and Comparative Law 19, no. 1 and 2 (January 14, 2019): 125–160. Accessed May 21, 2024. https://ejournal.um.edu.my/index.php/JMCL/article/view/16055.