1. Education for Sustainable Development Goals Learning Objectiveshttp://unesdoc.unesco.org/images/0024/002474/247444e.pdf
2. United Nations Education, Scientific and Culture Organizationhttp://unesdoc.unesco.org/images/0023/002305/230514e.pdf
3. Participatory learning and deliberative discussion within education for sustainable development;Gustafsson,2008
4. Problem-Based and Project Learning for Sustainable Development;Cörvers,2016
5. Conceptualizing intercultural competence;Spitzberg,2009