Ruiz, G., Sánchez, N. and Gonzalo de la Casa, L. (2003): “Pavlov in America: A Heterodox Approach to the Study of his Influence”, The Spanish Journal of Psychology, 6(2), pp. 99–111. Available at: https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0303220099A (Accessed: 18 November 2024).