Samankasikorn, W., W. Chatchawet, S. Kritcharoen, W. Chungpaibulpatana, and K. Boonsin. “Effect of Childbirth Preparation Model on Childbirth Experience for Primipara and Their Supporters”. Journal of Research in Nursing-Midwifery and Health Sciences, vol. 36, no. 1, Apr. 2016, pp. 99-114, https://he02.tci-thaijo.org/index.php/nur-psu/article/view/55071.