Navarro-Patón, Rubén, Joaquín Lago-Ballesteros, Víctor Arufe Giráldez, and Silvia Basanta-Camiño. 2018. “Assessment of the Basic Psychological Needs in Physical Education According to Age, Gender and Educational Stage”. Journal of Human Sport and Exercise 13 (3):710-19. https://doi.org/10.14198/jhse.2018.133.20.