Buasri, S., S. Soontornchai, and V. Chandrasiri. “Food Safety and Food Sanitation Standards of Mobile Food Vending Vehicle Among Ethnic Communities in Thoet Thai Sub-District, Mae Fa Luang District, Chiang Rai Province”. Journal of Nutrition Association of Thailand, vol. 56, no. 2, Oct. 2021, pp. 50-64, https://he01.tci-thaijo.org/index.php/JNAT/article/view/249017.