Langdon, Jody, Robert Schlote, Brandonn Harris, Glenn Burdette, and Sara Rothberger. “Effects of a Training Program to Enhance Autonomy Supportive Behaviors Among Youth Soccer Coaches”. Journal of Human Sport and Exercise 10, no. 1 (October 4, 2015): 1–14. Accessed July 20, 2024. https://www.jhse.ua.es/article/view/2015-v10-n1-effects-of-a-training-program-to-enhance-autonomy-su.