Santolaya Ochando, Francisco, Manuel Berdullas Temes, and José Ramón Fernández Hermida. “The Decade 1989-1998 in Spanish Psychology: An Analysis of the Development of Professional Psychology in Spain”. The Spanish Journal of Psychology, vol. 4, vol. 4, no. 2, 2001, p. 237, https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0101220237A.