Nawanira, Gusman, Lee Khai Loona, Fatimah Mahmuda, and Lim Kong Teongb. “Leveraging Sustainability of HEIs in Malaysia through Lean and Green Strategies: A Literature Review and Research Agenda”. International Journal of Engineering and Technology 7, no. 4.15 (October 7, 2018): 213–218. Accessed May 18, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/22992.