Martín, Elena, Martínez-arias, Rosario, Marchesi, Alvaro, and Pérez, Eva M. 2008. Variables that predict academic achievement in the spanish compulsory secondary educational system: a longitudinal, multi-level analysis. The Spanish Journal of Psychology 11, 2, 400–413. Retrieved December 4, 2024 from https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0808220400A