Chonirat, A., V. Wirojratana, K. Pongthavornkamol, and S. Tiraphat. “Factors Predicting Healthy Ageing of Older Adults”. Thai Journal of Cardio-Thoracic Nursing, vol. 31, no. 1, Aug. 2020, pp. 93-108, https://he02.tci-thaijo.org/index.php/journalthaicvtnurse/article/view/243982.