KHAIRANI, Umi; RAHMANI, Nur Ahmadi Bi; ATIKA, Atika. Operational Cost Budget Optimization Analysis to Improve Efficiency of PT Citra Robin Sarana. Quantitative Economics and Management Studies, [S. l.], v. 5, n. 5, p. 1005–1010, 2024. DOI: 10.35877/454RI.qems2813. Disponível em: https://jpabdimas.idjournal.eu/index.php/qems/article/view/2813. Acesso em: 30 apr. 2026.