Johnson, John A. “A Posteriori & A Priori Knowledge in Taekwondo”. Revista de Artes Marciales Asiáticas 11, no. 2s (September 29, 2016): 98–99. Accessed February 4, 2023. https://revpubli.unileon.es/ojs/index.php/artesmarciales/article/view/4191.