เนียมสกุล วรรณวดี. “Yoga Training for Stress Reduction in Pregnant Teenagers”. Princess of Naradhiwas University Journal 10, no. 2 (May 8, 2018): 184–193. accessed August 28, 2026. https://li01.tci-thaijo.org/index.php/pnujr/article/view/111026.