Álvarez Bogantes, C., Villalobos Víquez, G., Rodríguez Méndez, D., Herrera Monge, M. F., & Delgado Valverde, A. (2019). Physical Activity Levels at School: Use of the System for Observing Play and Leisure Activity in Youth (SOPLAY).

Álvarez Bogantes, Carlos, Grettel Villalobos Víquez, Diego Rodríguez Méndez, María Fernanda Herrera Monge, y Antonio Delgado Valverde. Physical Activity Levels At School: Use of the System for Observing Play and Leisure Activity in Youth (SOPLAY). 2019.

Álvarez Bogantes, Carlos, et al. Physical Activity Levels At School: Use of the System for Observing Play and Leisure Activity in Youth (SOPLAY). 2019.