Guillot-Valdés, M., A. Guillén-Riquelme, and G. Buela-Casal. “A Meta-Analysis of the Generalization of the Reliability of State/Trait Depression Inventory Scores”. Psicothema, vol. 32, no. Número 4, Nov. 2020, pp. 476-89, http://156.35.33.188/index.php/PST/article/view/17049.