Noorollahi, Atefeh, et al. “Comparing The Effectiveness of Mindfulness-Based Therapy and Paradoxical Treatment on Distress Tolerance in Adolescents With Social Anxiety Symptoms”. International Journal of Education and Cognitive Sciences, vol. 5, no. 3, June 2022, pp. 157-68, https://journalecs.com/index.php/ecs/article/view/153.