ฤทธิ์อยู่ อ. and ยงวานิชากร บ. (2002) “Fluoride level in public tap water in Thailand”., Thai Dental Public Health Journal. Bangkok, Thailand, 7(2), pp. 27–36. available at: https://he02.tci-thaijo.org/index.php/ThDPHJo/article/view/213074 (accessed: 19 September 2026).