Nuraisyah, Ani. “ANALYSIS AND DESIGN SYSTEM PRODUCT DEVELOPMENT OF PURPLE SWEET POTATOES INSTANT PORRIDGE”. Agroindustrial Technology Journal 4, no. 1 (May 31, 2020): 16–29. Accessed April 16, 2025. https://ejournal.unida.gontor.ac.id/index.php/atj/article/view/3822.