MARISMIATI, M.; MAULID, A. PENGARUH BIAYA PRODUKSI DAN BIAYA OPERASIONAL TERHADAP LABA BERSIH PT. INDUSTRI TELEKOMUNIKASI INDONESIA (PERSERO). LAND JOURNAL, [S. l.], v. 4, n. 2, p. 69-78, 2023. DOI: 10.47491/landjournal.v4i1.2980. Disponível em: https://ejurnal.ulbi.ac.id/index.php/jurnalland/article/view/2980. Acesso em: 31 jan. 2025.