Nhusawi, K. ., K. . Mattayakorn, R. . Ruangthai, and W. . Prachakul. “Causal Relationship Model for Maintaining Exercise Behavior Among Thai University Staff: Integration of Transtheoretical Model and Self-Determination Theory”. Kasetsart Journal of Social Sciences, vol. 43, no. 4, Oct. 2022, pp. 883–890, https://so04.tci-thaijo.org/index.php/kjss/article/view/261656.