SITOMPUL, K. R.; DIANTARI, R. A. Audit Mutu Internal Prosedur Survei Kepuasan Pelanggan Korporat dan Pemenuhan ISO 9001:2015 serta KPI GCG PT PLN Enjiniring. Jurnal Penelitian Inovatif, [S. l.], v. 6, n. 1, p. 687–698, 2026. DOI: 10.54082/jupin.2323. Disponível em: https://www.jurnal-id.com/index.php/jupin/article/view/2323. Acesso em: 4 mar. 2026.