1. UNESCO (2017) Education for Sustainable Development Goals: Learning Objectives. UNESCO, London.
2. Roth, C.E. (1968) Curriculum Overview for Developing Environmentally Literate Citizens.
3. Risser, P.G. (1986) Address of the Past President: Syracuse, New York
4. August 1986: Ecological Literacy. Bulletin of the Ecological Society of America, 67, 264-270.
5. Orr, D.W. (1991) Ecological Literacy: Education and the Transition to a Postmodern World. State University of New York Press, New York.