Sanz, Jesús, Inés Magán, and María Paz García-vera. “Psychometric properties of a Spanish version of the Beck”. The Spanish Journal of Psychology, vol. 11, vol. 11, no. 2, 2008, pp. 626-40, https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0808220626A.