Ruiz, F. J., e P. C. Vílchez. “Achievement Goals in Physical Education and Sport and Physical Activity in Leisure on Students from Spain, Costa Rica and Mexico”. Journal of Physical Education, Vol. 27, nº 1, março de 2016, p. e-2701, https://periodicos.uem.br/ojs/index.php/RevEducFis/article/view/26663.