Sudirjo, Frans, Mitra Musika Lubis, and Yana Priyana , trans. “The Role of Food Distribution System and Product Innovation on Availability and Affordability of Functional Food in Sukabumi District”. West Science Interdisciplinary Studies 2, no. 11 (November 29, 2024): 2170–2180. Accessed April 14, 2025. https://wsj.westsciences.com/index.php/wsis/article/view/1449.