Sarmiento Espiau, Alberto, Víctor Murillo Lorente, Jesús De Tremps Vicente, and Javier Álvarez Medina. “Evolution of Perceptions of Motivational Climates in Youth Soccer Development and a Comparison of Opinions Between Families and Players”. Sustainability and Sports Science Journal 2, no. 1 (November 27, 2023): 14–32. Accessed October 18, 2024. https://sssj.kineticeditorial.com/index.php/sssj/article/view/evolution-perceived-motivational-climates.