Puangniyom, Sukanya, and Wonpen Kaewpan. “Factors Related to Repeated Pregnancy in Adolescents, Phetchaburi Province”. Journal of Health Science of Thailand 27, no. 1 (February 26, 2018): 30–41. Accessed January 30, 2026. https://www.thaidj.org/index.php/JHS/article/view/2447.