Sánchez-miguel, Emilio and Jesús-Nicasio García-sánchez. “The Decade 1989-1998 in Spanish Psychology: An Analysis of Research in Developmental and Educational Psychology”. The Spanish Journal of Psychology, vol. 4, vol. 4, no. 2, 2001, p. 182, https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0101220182A.