J. R. Ferrari y J. F. Díaz Morales, «Perceptions of Self-concept and Self-presentation by Procrastinators: Further Evidence», Span. j. psychol., vol. 10, n.º 1, pp. 91–96, may 2007, Accedido: jul. 23, 2026. Disponible en: https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0707120091A