Promkunta , N., C. . . . Baosoung, and N. . Sansiriphun. “Effect of Social Support on Fear of Childbirth Among Primiparous Parturients”. Nursing Journal CMU, vol. 47, no. 3, Sept. 2020, pp. 40-49, https://he02.tci-thaijo.org/index.php/cmunursing/article/view/245706.