Chirawatkul, S., Kumdee, B., Jongudomkarn, D., Kotanara, I., Sawangchareon, K., Rujiraprasert, N., Yigusang, R., Maungpil, S., Rungreongkulkij, S., Wtananugoonkiat, S., Chareonwong, S., Anusornterakuland, S., & Kittiwatpisarn, W. (2017). Situation of Teenage Pregnancy: Perception among Adolescents in 7 Provinces of Thailand. Journal of Health Science of Thailand, 21(5), 865–877. Retrieved from https://thaidj.org/index.php/JHS/article/view/1146