Usman, Fathoni, Nur Adibah Jalaluddin, and Sumi Amariena Hamim. 2018. “Value Engineering in Building Information Modelling for Cost Optimization of Renovation Works: A Case Study”. International Journal of Engineering & Technology 7 (4.35): 431-35. https://doi.org/10.14419/ijet.v7i4.35.22856.