Intarakamhang, U., and T. Khumthong. “Measurement Development of Health Literacy and Unwanted Pregnancy Prevention Behavior for Thai Female Adolescents”. Journal of Public Health Nursing, vol. 31, no. 3, Dec. 2017, pp. 19-38, https://he01.tci-thaijo.org/index.php/phn/article/view/245444.