Shah Habibullah, Muzafar, Nur Azura Sanusi, Lazim Abdullah, Suhal Kusairi, Asan Ali Golam Hassan, and Normi Azura Ghazali. “DOES THE LESS DEVELOPED STATES IN MALAYSIA CATCHING-UP TO THE RICHER STATE OF SELANGOR?”. Journal of Contemporary Issues and Thought 8 (September 17, 2018): 29-40. Accessed June 23, 2021. https://ejournal.upsi.edu.my/index.php/JCIT/article/view/1056.