ROSDIYATI; PUTRO, G. M. H. . The Role Of Operational Audit In Improving Sales Effectiveness At GAS STATIONS 54,611.20 Gresik. Jurnal Mantik, [S. l.], v. 3, n. 3, p. 177-180, 2021. Disponível em: https://www.ejournal.iocscience.org/index.php/mantik/article/view/1590. Acesso em: 30 jul. 2026.