Uttasuradee, M. ., S. . Kritcharoen, and S. . Phumdoung. “Factors Influencing Happiness Among Pregnant Women”. Journal of Research in Nursing-Midwifery and Health Sciences, vol. 40, no. 3, Sept. 2020, pp. 116-27, https://he02.tci-thaijo.org/index.php/nur-psu/article/view/246169.