Biswanger, Karin, Fiona Lackenbauer, Regina Müller, und Angelika Volek. „Using Lesson Study to Produce Assessment Scales and Professional Teaching Material for CLIL“. R&E-SOURCE, no. 11 (April 14, 2019). Zugegriffen Mai 2, 2024. https://journal.ph-noe.ac.at/index.php/resource/article/view/682.