Boonroungrut, C., & Fei, H. (2018). The Theory of Planned Behavior and Transtheoretical Model of Change: a systematic review on combining two behavioral change theories in research. Journal of Public Health and Development, 16(1), 75–87. Retrieved from https://he01.tci-thaijo.org/index.php/AIHD-MU/article/view/100950