Mongkol, A., Y. Vongpiromsan, T. Tangseree, W. Huttapanom, P. Romsai, and W. Chutha. “The Development and Testing of Thai Mental Health Indicator Version 2007”. Journal of the Psychiatric Association of Thailand, vol. 54, no. 3, Apr. 2013, pp. 299-16, https://he01.tci-thaijo.org/index.php/JPAT/article/view/7673.