Nogueira, Q. W. C. “<b>Ethics in Volleybal and the Sporting spirit</b&gt; - Doi: 10.4025/reveducfis.V21i3.8040”. Journal of Physical Education , Vol. 21, no. 3, Sept. 2010, pp. 503-16, https://periodicos.uem.br/ojs/index.php/RevEducFis/article/view/8040.