Gungat, Lillian, Kurian V. John, and Rohayah Ladom. “Supply Chain and Life Cycle Cost of Roofing in Sabah: A Case Study”. Journal of Surveying, Construction and Property 2, no. 1 (June 29, 2011). Accessed June 4, 2025. https://peradaban.um.edu.my/index.php/JSCP/article/view/5655.