Rodriguez, Jose Antonio Pelier, Hirbins Manuel Dopico Perez, and Hilda Rosa Rabilero Sabates. “Psychological Actions to Increase Tolerance to Frustration in Pitchers: Category 15-16 Years”. International journal of health sciences 4, no. 1 (January 9, 2020): 1-7. Accessed September 20, 2020. https://www.sciencescholar.us/journal/index.php/ijhs/article/view/377.