Saragi, Dian Darma Syahputra, and Liharman Saragih. “Peranan Sales Promotion Representative Terhadap Volume Penjualan Shinzui Pada Pt. Focus Distribusi Nusantara”. Manajemen: Jurnal Ekonomi 1, no. 1 (May 15, 2019): 47–54. Accessed November 22, 2024. https://jurnal.usi.ac.id/index.php/JEUSI/article/view/137.