Tillis, C.R.Florida Master Plan and Action Guide for Environmental Education. Tallahassee: Florida Department of Education, 1971, 30 p.
2.
Stapp, W. "Inservice Teacher Training in Environmental Education." The Science Teacher34, no. 4 (1967): 33-35.
3.
Foster, C. "Guidelines for Citizen Action." Journal of Environmental Education2, no. 3 (1971): 24-26.
4.
Stapp, W. "Environmental Encounters: Strategy for Curriculum Development and Implementation (K-12)." Journal of Environmental Education2, no. 1 ( 1970): 35-41.
5.
Roth, R. "Fundamental Concepts for Environmental Management." Journal of Environmental Education1, no. 3 (1970): 65-74.