Aldam Apriyansah, M., L. Winiasri, and W. Suryono. “Optimization of Pc-200 Excavator Productivity in Runway Excavation Work at Sta 0+000 - 0+700 Pohuwato Airport Development Gorontalo”. Proceeding of International Conference of Advance Transportation, Engineering, and Applied Social Science, vol. 2, no. 1, Nov. 2023, pp. 603-8, doi:10.46491/icateas.v2i1.1715.