Sinta, Dewi, Rajindra Rajindra, and Guasmin Guasmin. 2021. “Analysis of the Operational Cost Budget As a Tool for Planning and Controlling Operational Costs at the Regional Water Company of Donggala Regency”. International Journal of Health, Economics, and Social Sciences (IJHESS) 3 (4), 282-86. https://doi.org/10.56338/ijhess.v3i4.1902.