Álvarez-Martínez-Iglesias, J. M., Molina-Saorín, J., Trigueros-Cano, F. J., & Miralles-Martínez, P. (2021). The Development of Historical Competencies in Secondary Education: A Study Based on the Analysis of Sources in Spanish and Italian History Textbooks. International Journal of Learning, Teaching and Educational Research, 20(4), 137–151. Retrieved from https://ijlter.net/index.php/ijlter/article/view/120