Kusnierz, Cezary. «Motivations for starting combat sports training as seen by boxing and MMA contestants». Revista de Artes Marciales Asiáticas 11, no. 2s (Setembro 29, 2016): 74–75. Acedido Setembro 4, 2024. https://revistas.unileon.es/ojs/index.php/artesmarciales/article/view/4179.