BOLÒS, O. de. "Muscular christianity: evangelical protestants an the development of American sport", de Tony Ladd i James A. Mathisen. Revista Catalana de Pedagogia, [S. l.], v. 3, p. 414–415, 2005. Disponível em: https://revistes.iec.cat/index.php/RCP/article/view/1718.001. Acesso em: 2 may. 2024.