References
- Brezina , D. W. and Overmeyer , A. 1974 . Congress in Action: The Environmental Education Act , New York : The Free Press, a division of Macmillan Publishing Company .
- Stapp , William B. , ed. From Ought to Action in Environmental Education: A Report of the National Leadership Conference on Environmental Education . Columbus, OH : SMEAC Information Reference Center, The Ohio State University .
- 1977 . The President's Environmental Program , Washington, D.C. : U.S. Government Printing Office .