ANDI YULIANTO; RONI, Roni; SETIADI, Roby; INDRIYANI, Azizah. Analisis Positioning Operator Seluler dan Strategi Pemasaran Untuk Memenangkan Pasar di Wilayah Yogyakarta. Journal of Economic and Management (JECMA), [S. l.], v. 2, n. 2, p. 33–45, 2020. DOI: 10.46772/jecma.v1i01.223. Disponível em: https://jurnal.umus.ac.id/index.php/jecma/article/view/223. Acesso em: 28 apr. 2024.