Boonen, Ute K., Sabine Jentges, and Tina Konrad. “Teaching Materials for Neighbouring Language Teaching at School. A German-Dutch Comparison”. Glottodidactica 45, no. 1 (September 10, 2018): 7–26. Accessed February 24, 2026. https://pressto.amu.edu.pl/index.php/gl/article/view/13185.