W. Samankasikorn, W. Chatchawet, S. Kritcharoen, W. Chungpaibulpatana, and K. Boonsin, “Effect of Childbirth Preparation Model on Childbirth Experience for Primipara and Their Supporters”, JRN-MHS, vol. 36, no. 1, pp. 99–114, Apr. 2016.