Río Rodríguez, D., E. Iglesias-Soler, J. Cuadrado-Pérez, and M. Ferández-del-Olmo. “Are Internal Focuses Really Useful? A Replication Study in Basketball”. International Journal of Physical Education, Fitness and Sports, vol. 7, no. 3, Sept. 2018, pp. 72-79, doi:10.26524/ijpefs1838.