Sogantad, Jeerarak, Kamonmarn Virutsestazin, Surintorn Kalampakorn, and Anan Malarat. “The Development of Enhanced Exercise Programs Using a Transtheoretical Model for Behavioral Change Among Elderly Teachers and Education Staff”. Journal of Public Health Nursing 33, no. Online (December 1, 2019): 67–86. Accessed April 19, 2024. https://he01.tci-thaijo.org/index.php/phn/article/view/242008.