RUIZ, J. A.; BRUNER, C. A.; BALDERRAMA, D. M. Relative time effect in signaled and unsignaled delays of reinforcement. Mexican Journal of Behavior Analysis, [S. l.], v. 33, n. 2, 2010. DOI: 10.5514/rmac.v33.i2.16248. Disponível em: https://journals.unam.mx/index.php/rmac/article/view/16248. Acesso em: 3 jul. 2024.