USNUL CH, Y. TELKOM VERSUS INDOSAT. Jurnal Ekonomi Modernisasi, [S. l.], v. 3, n. 1, p. 1–11, 2007. Disponível em: https://ejournal.unikama.ac.id/index.php/JEKO/article/view/924. Acesso em: 18 may. 2024.