References
- McKeown Ice, R., & the Environmental Literacy Assessment Consortium. (1996). Environmental education in the United States: A survey of preservice teacher education programs. Knoxville, TN: University of Tennessee, Center for Geography and Environmental Education.
- Pennsylvania 21st Century Environment Commission (1998). The first Pennsylvania environmental readiness for the 21st century report. Harrisburg: Author. Retrieved May 13, 2005, from
- McKeown-Ice, R. (2000). Environmental education in the United States: A survey of preservice teacher education programs. The Journal of Environmental Education, 32(1), 4-11.
- Dillman, D. (1978). Mail and telephone survey: The total design method. New York: Wiley.