Vissoci, Joao Ricardo Nickenig, Lenamar Fiorese Vieira, Leonardo Pestillo de Oliveira, and José Luiz Lopes Vieira. 2008. “Motivation and Moral Atributes in Sport”. Journal of Physical Education 19 (2), 173-82. https://periodicos.uem.br/ojs/index.php/RevEducFis/article/view/5524.