1. Schwund des Wissens in der Wissengesellschaft?;Ruhloff,2007
2. An Invitation to Social Construction;Gergen,1999
3. UNESCO 2015, Strategy for Education for Sustainable Developmenthttp://www.unece.org/env/esd.html
4. Education 2030. Incheon Declaration and Framework for Action towards Inclusive and Equitable Quality Education and Lifelong Learning for Allhttp://www.unesco.org/new/fileadmin/MULTIMEDIA/HQ/ED/ED_new/pdf/FFA-ENG-27Oct15.pdf
5. Sustainable Development Goals, 2015https://www.un.org/development/desa/disabilities/envision2030.html