Ruiz, Gabriel, Natividad Sánchez, and Luis Gonzalo de la Casa. “Pavlov in America: A Heterodox Approach to the Study of His Influence”. The Spanish Journal of Psychology 6, no. 2 (January 1, 2003): 99–111. Accessed November 18, 2024. https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0303220099A.