BACHÁ MÉNDEZ, G.; ALONSO OROZCO, I. Discrimination of Contingencies under Conditions of Contrafreeloading. Mexican Journal of Behavior Analysis, [S. l.], v. 33, n. 1, 2010. DOI: 10.5514/rmac.v33.i1.16259. Disponível em: https://revistas.unam.mx/index.php/rmac/article/view/16259. Acesso em: 1 may. 2024.