Uttasuradee, M., Kritcharoen, S., & Phumdoung, S. (2020). Factors Influencing Happiness Among Pregnant Women. Journal of Research in Nursing-Midwifery and Health Sciences, 40(3), 116–127. retrieved from https://he02.tci-thaijo.org/index.php/nur-psu/article/view/246169