“Comparative Effects of Teacher and Peer Verbal Encouragement on Psychological Responses During Physical Education Activities: A Randomized Controlled Crossover Study”, J Sports Psychol, vol. 34, no. 2, pp. 13–21, Sep. 2025, Accessed: Oct. 02, 2026. [Online]. Available: https://www.rpd-online.com/manuscript/index.php/rpd/article/view/1990