García Hernández, Vicente, and Ely Rayek. “Experimental análisis of Arithmetic Behavior: Componets of Two Response Classes in Addition Problems”. Mexican Journal of Behavior Analysis 4, no. 1 (January 27, 2011): 41–58. Accessed July 17, 2024. https://revistas.unam.mx/index.php/rmac/article/view/23646.