Martín Espinosa, D., González González de Mesa, C., Zagalaz Sánchez, M. L., & Chinchilla Mira, J. J. (2018). Extracurricular physical activities: Motivational climate, sportspersonship, disposition and context. A study with primary 6th grade students. Journal of Human Sport and Exercise, 13(2), 466–486. https://doi.org/10.14198/jhse.2018.132.18