Martín, E. ., Martínez-arias, R. ., Marchesi, A. . and Pérez, E. 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), pp. 400–413. Available at: https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0808220400A (Accessed: 4 December 2024).