RIFAI, Iskandar; KOJONGIAN, Patricia J.C.; IMRAN, Treesje; BAALI, Yongker. Pengaruh Promosi Terhadap Peningkatan Penjualan Produk Telkomsel di Kota Bitung. EKOMA : Jurnal Ekonomi, Manajemen, Akuntansi, [S. l.], v. 3, n. 3, p. 1680–1687, 2024. DOI: 10.56799/ekoma.v3i3.5004. Disponível em: https://al-haramjournal.co.id/EKOMA/article/view/5004. Acesso em: 13 aug. 2026.