Abdul Halim, Siti Norhamimah Binti, Ahmad Aiman Harum, Mohd Aizat Jamaludin, and Betania Kartika Muflih. “Muslim-Friendly Railway Services: Concept and Challenges of Malaysian Electric Train Service (ETS)”. Journal of Halal Industry & Services 3, no. 1 (June 22, 2020). Accessed April 11, 2025. https://hh-publisher.com/ojs321/index.php/JHIS/article/view/18.