Mohd Azlan, Nur Ayuni, Juhaida Abu Bakar, and Norliza Katuk. 2021. “Quality Environmental Practice Evaluation System (5SPAS)”. Multidisciplinary Applied Research and Innovation 2 (3): 177-81. https://penerbit.uthm.edu.my/periodicals/index.php/mari/article/view/5108.