Mohd Rusli, Mohd Hazmi. “Navigational Hazards in International Maritime Chokepoints: A Study of the Straits of Malacca and Singapore”. Journal of International Studies 8 (January 6, 2020): 47–75. Accessed December 1, 2023. https://e-journal.uum.edu.my/index.php/jis/article/view/7926.