Chandra, Evelyn. “HUBUNGAN DIRECT MARKETING DAN PERSONAL SELLING TERHADAP KEPUTUSAN PEMBELIAN PIE ELIS”. Jurnal Performa: Jurnal Manajemen dan Start-up Bisnis 1, no. 4 (November 28, 2016): 414–423. Accessed February 20, 2026. https://journal.uc.ac.id/index.php/performa/article/view/217.