Supardi, Edi, and Noneng Nurjanah. “Food Cost Analysis During Lockdown Based on Activity-Based Costing and Food Frequency Questionnaire Methods in Batununggal Village, Bandung City”. Proceedings of The International Halal Science and Technology Conference 14, no. 1 (March 10, 2022): 36–46. Accessed November 21, 2024. https://proceeding.researchsynergypress.com/index.php/ihsatec/article/view/484.