Marismiati, Marismiati, and Arnelia Maulid. “PENGARUH BIAYA PRODUKSI DAN BIAYA OPERASIONAL TERHADAP LABA BERSIH PT. INDUSTRI TELEKOMUNIKASI INDONESIA (PERSERO)”. LAND JOURNAL 4, no. 2 (July 25, 2023): 69-78. Accessed January 31, 2025. https://ejurnal.ulbi.ac.id/index.php/jurnalland/article/view/2980.