Yunqian Du, et al. “Exploring the Mediating Role of Self-Confidence in the Relationship Between Psychological Factors and Performance in China’s Tourism and Hotel Industry”. Revista De Psicología Del Deporte (Journal of Sport Psychology), vol. 34, no. 1, Dec. 2024, pp. 33-41, https://mail.rpd-online.com/index.php/rpd/article/view/1929.