Milyardi, R., R. D. Wirahadikusumah, M. Abduh, and B. H. Siregar. “Construction Performance Analysis in the Project Delivery of Toll Road Concession”. Jurnal Teknik Sipil, vol. 27, no. 1, Apr. 2020, pp. 39-50, doi:10.5614/jts.2020.27.1.5.