Applis, Stefan, and Janis Fögele. “Professionalization in the Third Phase of Teacher Training Aiming at Educational Standard Implementation: Theoretical, Methodological, and Empirical Challenges for Research in Geography Education for Geography Teacher Qualification”. Journal of Geography Education 42, no. 3 (September 30, 2014): 193–212. Accessed May 18, 2026. https://www.zgd-journal.de/index.php/zgd/article/view/118.