Kusnierz, Cezary. “Motivations for starting combat sports training as seen by boxing and MMA contestants”. Revista de Artes Marciales Asiáticas 11, no. 2s (September 29, 2016): 74–75. Accessed November 22, 2024. https://revpubli.unileon.es/ojs/index.php/artesmarciales/article/view/4179.