Cantú, Elda, and Emilio Ribes. “Effects Ofreinforcingfragntentary Responses in the ‘use’ of Article Number in Prescholar Children”. Mexican Journal of Behavior Analysis 1, no. 1 (August 30, 2011): 43–55. Accessed June 17, 2024. https://revistas.unam.mx/index.php/rmac/article/view/27057.