Education and the challenge of environmental problems.
APA Citation
Intergovernmental Conference on Environmental Education (1977 : Tʻbilisi, G., Unesco., United Nations Environment Programme. (1977). Education and the challenge of environmental problems. Paris: Unesco.
MLA Citation
Intergovernmental Conference on Environmental Education (1977 : Tʻbilisi, Georgia), Unesco, and United Nations Environment Programme. Education And the Challenge of Environmental Problems. Paris: Unesco, 1977.
Warning: These citations may not always be complete (especially for serials).