Robustin, Tri Palupi. “Assistance On Packaging And Marketing Innovations In The Soy Milk Business”. Empowerment Society 4, no. 2 (August 31, 2021): 26–29. Accessed May 16, 2024. https://ejournal.itbwigalumajang.ac.id/index.php/eps/article/view/698.