Andi Rizal, T. Hilmansyah and M. Fajri 2025. Estimation of Construction Cost of Road Works in Central Sulawesi Using Quadratic Regression. International Journal of Health, Economics, and Social Sciences (IJHESS). 7, 1 (Jan. 2025), 181~184. DOI:https://doi.org/10.56338/ijhess.v7i1.6161.