PADANG, N.; IRNIHSYAH IRAWAN, S. .; ATIKA, R. .; BR.MANALU, J. .; SAFITRI SITORUS, J. . EFFECT OF PRODUCTION COSTS, PROMOTIONAL COSTS, AND SALES VOLUME ON NET PROFIT IN MANUFACTURING COMPANIES. Jurnal Ipteks Terapan, [S. l.], v. 16, n. 3, p. 374–381, 2022. DOI: 10.22216/jit.v%vi%i.1095. Disponível em: http://publikasi.lldikti10.id/index.php/jit/article/view/1095. Acesso em: 3 jul. 2024.