Hardiyanti, Marina, et al. “Perspectives of Teachers and Food Sellers on Healthy Canteens in Yogyakarta: A Qualitative Study”. Jurnal Gizi Dan Dietetik Indonesia (Indonesian Journal of Nutrition and Dietetics), vol. 13, no. 6, Nov. 2025, pp. 421-32, doi:10.21927/ijnd.2025.13(6).421-432.