Srimee, P., Siangsai, P., Yoddamnern, W., Boontanom, W., Chaidet, E., & Kosuwin, R. (2023). Developing a self-learning package through line application: A case study on food sanitation for coffee shop, Ongkharak District, Nakhon Nayok Province. Journal of Public Health and Health Sciences Research, 5(2), 120–135. retrieved from https://he01.tci-thaijo.org/index.php/JPHSR/article/view/261347