Morera-Barrantes, R., Calderón-Chaverri, C., Gutiérrez-Vargas, R., Rojas-Valverde, D., Gutiérrez-Vargas, J. C., & Ugalde Ramìrez, J. A. (2021). Physical Demands of Costa Rican Professional Soccer Players: Influence of the Playing Position and the Competitive Level. Universidad Nacional, Costa Rica.

Morera-Barrantes, Roy, Carlos Calderón-Chaverri, Randall Gutiérrez-Vargas, Daniel Rojas-Valverde, Juan Carlos Gutiérrez-Vargas, and Jose Alexis Ugalde Ramìrez. Physical Demands of Costa Rican Professional Soccer Players: Influence of the Playing Position and the Competitive Level. Universidad Nacional, Costa Rica, 2021.

Morera-Barrantes, Roy, et al. Physical Demands of Costa Rican Professional Soccer Players: Influence of the Playing Position and the Competitive Level. Universidad Nacional, Costa Rica, 2021.