Kaewsuk, W., N. Sansiriphun, and C. Baosoung. “The Effect of Social Support via an Application on Fear of Childbirth Among Primigravidas”. Nursing Journal CMU, vol. 50, no. 1, Apr. 2023, pp. 381-95, https://he02.tci-thaijo.org/index.php/cmunursing/article/view/259435.