Sookkul, K., and P. Wongsawat. “Depression in the Working Age Population: The Related Factors and the Care Guideline”. Journal of Phrapokklao Nursing College, Chanthaburi, vol. 30, no. 2, June 2019, pp. 229-38, https://he01.tci-thaijo.org/index.php/pnc/article/view/179024.