MELINDA, J. O.; MANULLANG, R. R.; ZAMHARI. ANALISIS PENGARUH DIRECT MARKETING TERHADAP KEPUTUSAN PEMBELIAN DALAM USAHA MIKRO PENTOL DI KOTA PANGKALPINANG. JURNAL PROGRESIF MANAJEMEN BISNIS, [S. l.], v. 10, n. 2, p. 212–219, 2023. Disponível em: https://e-jurnal.stie-ibek.ac.id/index.php/JIPMB/article/view/335. Acesso em: 1 mei. 2024.