Tungtrijuk, N., S. Sanswang, P. Buasuwan, and W. Lupanachokdee. “ the Office of the Higher Education Commission”. Journal of Research in Nursing-Midwifery and Health Sciences, vol. 39, no. 3, Sept. 2019, pp. 90-102, https://he02.tci-thaijo.org/index.php/nur-psu/article/view/218958.