Álvarez-Martínez-Iglesias JM, Molina-Saorín J, Trigueros-Cano FJ, Miralles-Martínez P. The Development of Historical Competencies in Secondary Education: A Study Based on the Analysis of Sources in Spanish and Italian History Textbooks. IJLTER [Internet]. 2021 Apr. 30 [cited 2026 Apr. 30];20(4):137-51. Available from: https://ijlter.net/index.php/ijlter/article/view/120