Bumrungsri, Suwat, and Thassaporn Chusak. 2020. “A Structural Equation Model of Factors Influencing Role Performance of Village Health Volunteers, Nakhon Sawan Province”. Journal of the Association of Researchers 22 (1):124-36. https://so04.tci-thaijo.org/index.php/jar/article/view/242876.