Abdullah, Lazim, Wai Mun Lim, and Zamali Tarmudi. “A Preference Ranking Method Based on Triangular Fuzzy Numbers for Green Supplier Selection”. Journal of Informatics and Mathematical Sciences 12, no. 1 (March 30, 2020): 55–68. Accessed May 3, 2024. https://www.rgnpublications.com/journals/index.php/jims/article/view/913.