Truman Sinaga, and Albert Eddy Husin. “Key Success Factors for Critical Chain Project Management (CCPM) and 4D Building Information Modeling (BIM) for Improving Time Performance in Basement Work on 5 Layers of High-Rise Residential Buildings in Indonesia”. International Journal of Engineering Research and Advanced Technology (ijerat) (E-ISSN 2454-6135) DOI: 10.31695/IJERAT 7, no. 4 (April 20, 2021): 22–33. Accessed September 30, 2022.