MASORONG, S. A. V. .; ROZARI, P. E. D. .; MOLIDYA, A. . Analysis of the Effect of Operational Costs on the Profitability of the Tirta Dharma Regional Drinking Water Company, Belu Regency. Formosa Journal of Sustainable Research, [S. l.], v. 2, n. 10, p. 2477–2486, 2023. DOI: 10.55927/fjsr.v2i10.6367. Disponível em: https://journal.formosapublisher.org/index.php/fjsr/article/view/6367. Acesso em: 7 jun. 2026.