Acosta, C., Ortiz, M. V., Revilla, R. G. and Reyna, C. (2014) “Social Dilemmas and Indirect Reciprocity: A systematic review”, Escritos de Psicología - Psychological Writings, 7(2), pp. 1–10. doi: 10.24310/espsiescpsi.v7i2.13253.