“Pengaruh Product Involvement, Milk Knowledge Dan Perceived Value Terhadap Purchase Intention ( Kasus : Produk Susu Ultramilk)”. Jurnal Manajemen Bisnis dan Kewirausahaan 3, no. 1 (August 5, 2019). Accessed March 4, 2026. https://journal.untar.ac.id/index.php/jmbk/article/view/4921.