SANUSI ARIYANTO. Analisis Profit Margin Perusahaan operator telekomunikasi pada pasar oligopoly. Jurnal Ekonomi KIAT, [S. l.], v. 35, n. 1, p. 58–72, 2024. DOI: 10.25299/kiat.2024.17830. Disponível em: https://journal.uir.ac.id/index.php/kiat/article/view/17830. Acesso em: 5 nov. 2026.