กรมอนามัย ก. Volume 3 Number 2 July - December 1998. Thai Dental Public Health Journal, Bangkok, Thailand, v. 3, n. 2, p. 1–84, 1998. Disponível em: https://he02.tci-thaijo.org/index.php/ThDPHJo/article/view/214027. Acesso em: 18 sep. 2026.