Trahorsch, Petr, and Jan D. Bláha. “Visual Representation of the Curriculum in Geography Textbooks: The Structure of Visuals in Educational Medium Analysis”. IARTEM e-journal 11, no. 2 (January 12, 2020). Accessed February 3, 2023. https://ojs.bibsys.no/index.php/IARTEM/article/view/587.