Augsornrat, S., P. Perngmark, and W. Chansawang. “Family Structure, Family Functions, and Sexual Risk Behaviors Among Female Junior- High School Students: Nakhon Si Thammarat Province”. Journal of Health Science of Thailand, vol. 18, no. 5, Jan. 2018, pp. 736-44, https://thaidj.org/index.php/JHS/article/view/1809.