Ferrari, J.R. y Díaz Morales, J.F. (2007) «Perceptions of Self-concept and Self-presentation by Procrastinators: Further Evidence», The Spanish Journal of Psychology, 10(1), pp. 91–96. Disponible en: https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0707120091A (Accedido: 23 julio 2026).