วงศ์คงคาเทพ สุณี. 2012. “Factors related to Dental caries among Thai Children Aged 3- 5 years compare poor and non-poor groups”. Thai Dental Public Health Journal 17 (1). Bangkok, Thailand:60-80. https://he02.tci-thaijo.org/index.php/ThDPHJo/article/view/178220.