Abd Karim, Nur Alkaf. “Risk Allocation in Public Private Partnership (PPP) Project: A Review on Risk Factors”. International Journal of Sustainable Construction Engineering and Technology 2, no. 2 (December 16, 2011). Accessed May 1, 2024. https://penerbit.uthm.edu.my/ojs/index.php/IJSCET/article/view/344.