Cooper Stapp, Alicia, and Ashley Lambers. “The The Impact of Mindfulness-Based Yoga Interventions on Fifth-Grade Students’ Perceived Stress and Anxiety”. International Electronic Journal of Elementary Education, vol. 12, no. 5, July 2020, pp. 471-80, https://www.iejee.com/index.php/IEJEE/article/view/1127.