Martín Ezpeleta, Antonio, and Yolanda Echegoyen-Sanz. “Travelling With Darwin and Humboldt. A Transdisciplinary Educational Experience”. Journal of Education Culture and Society 10, no. 2 (September 2, 2019): 111–125. Accessed May 12, 2024. https://www.e-methodology.eu/index.php/jecs/article/view/570.