Gutiérrez R., Javier, Pedro Arriaga R., Gerardo Williams H., and Rosalva Cabrera C. “Contingency Interactions in Positive Auto-Maintenance”. Mexican Journal of Behavior Analysis 1, no. 1 (August 25, 2011): 23–36. Accessed April 28, 2024. https://revistas.unam.mx/index.php/rmac/article/view/26882.