References
- Eller , J. 1999 . Land, legacy and learning: Making education pay for Kentucky's environment , Frankfort , KY : Kentucky Environmental Education Council .
- Lieberman , G. and Hoody , L. 1998 . Closing the achievement gap: Using the environment as an integrating context for learning , Poway , CA : Science Wizards .
- North American Association for Environmental Education (NAAEE). 1999 . Excellence in environmental education: Guidelines for learning K–12 , Rock Spring , GA : Author .
- NAAEE. 1999 . Guidelines for the initial preparation of environmental educators , Rock Spring , GA : Author .