Carpio, C., L. Pacheco-León, M. Chaparro, J. Carranza, R. Narayanam-Rodríguez, and V. Pacheco. “Choice Between Helping Vs Not Helping: Level of Mastery in the Task”. Interacciones, Vol. 5, no. 1, Jan. 2019, pp. 25-31, doi:10.24016/2019.v5n1.159.