Adrianto, A. “Pengaruh Promosi Dan Harga Terhadap Keputusan Pembelian Produk Susu Dancow”. Insight Management Journal 2, no. 3 (May 30, 2022): 91-99. Accessed March 23, 2023. http://journals.insightpub.org/index.php/imj/article/view/179.