Zakaria, Rozana, Eeydzah Aminudin, Jeffryl Azniel Adzar, M. Hafizzudin Syafiq, and Ferry Firmawan. “MALAYSIA GREEN HIGHWAY INDEX: THE ESG QUADRUPLE HELIX JOURNEY”. PLANNING MALAYSIA 23, no. 38 (October 16, 2025). Accessed October 18, 2026. https://www.planningmalaysia.org/index.php/pmj/article/view/1796.