1. de la Vega EL 2004. Awareness, Knowledge, and Attitude about Environmental Education: Responses from Environmental Specialists, High School Instructors, Students, and Parents. EdD Dissertation, Unpublished. Florida: University of Central Florida-Orlando.
2. George D, Mallery P 2003. SPSS for Windows Step by Step: A Simple Guide and Reference. 11.0 Update. 4th Edition. Boston: Allyn and Bacon.
3. Holahan CJ 1982. Environmental Psychology. New York: Random House.
4. Houghton JT, Meira Filho LG, Calander BA, Harris N, Kattenberg A, Maskell K (Eds.) 1996. Climate Change 1995: The Science of Climate Change, Contribution of Working Group I to the Second Assessment Report of the Inter-governmental Panel on Climate Change (IPCC). Cambridge, U.K: Cambridge University Press.
5. Krantz PD 2002. A Study of the Impact of Environmental Education Workshops on Teachers’ Attitude and Efficacy. PhD Dissertation, Unpublished. Missouri: University of Missouri Columbia.