1. Anderson, C. E., McDougald, J. S., & Cuesta Medina, L. (2015). CLIL for young learners. In C. N. Giannikas, L. McLaughlin, G. Fanning, & N. Deutsch Muller (Eds.), Children learning English: From research to practice (pp. 137–151). Garnet.
2. Bajoraitytė, R. (2017). Content language integrated learning (CLIL). Adaptation possibilities into Lithuanian kindergartens (Master’s thesis). Kaunas University of Technology, Kaunas, Lithuania.
3. IZA discussion papers, no. 10742;P Biroli,2017
4. Carbonara, V. (2019). Teaching Italian language in a bilingual kindergarten in Turkey: A framework for teacher training. In S. Zein & S. Garton (Eds.), Early language learning and teacher education: International research and practice (pp. 177–196). Multilingual Matters.
5. Casal Madinabeitia, S. (2007). The integrated curriculum, CLIL and constructivism. Revista española de lingüística aplicada, 1, 55–66.