Fuadi, Dimas Ivan, and Budi Astuti. “Pengaruh Bauran Promosi Terhadap Volume Penjualan Pada Unit Produk Hilir Kopi Banaran PT. Perkebunan Nusantara IX”. Jurnal Informatika Ekonomi Bisnis 5, no. 4 (December 31, 2023): 1316-1321. Accessed January 22, 2026. https://www.infeb.org/index.php/infeb/article/view/704.