1. Adomßent, M., and H. Thomas 2013. “The Concept of Competences in the Context of Education for Sustainable Development (ESD).” Concept paper. Accessed 8 October 2017. https://pdfs.semanticscholar.org/9ec3/118c915b2b11fd1017a1691398346f46af45.pdf
2. Holistic Approaches to Develop Sustainability and Research Competencies in Pre-Service Teacher Training
3. Anđić, D. 2006. “Analiza stanja i vizija razvoja obrazovanja učitelja za okoliš [Analysis of the Status and Vision of the Development of Teacher Education for the Environment].” Unpublished Masters thesis, University of Rijeka.