1.
Esparó G, Torrente M, Fernández-ballart JD, Canals J. Psychological problems and associated factors at 6 years of age: Differences between sexes. Span. j. psychol. [Internet]. 6 de abril de 2004 [citado 22 de julio de 2026];7(1):53-62. Disponible en: https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0404120053A