Arias Holgado, Mª Francisca, and Santiago Benjumea Rodríguez. “Second Congress of the Spanish Society for Comparative Psychology”. Apuntes de Psicología 8, no. 31 (July 20, 1990): 39. Accessed October 26, 2026. https://apuntesdepsicologia.es/index.php/revista/article/view/1082.