References
- Cronbach , L. J. 1971 . “Test Validation.” . In Educational Measurements, , Second Edition , Edited by: Thorndike , R. L. Washington : American Council on Education .
- 1977 . Energy Inventory in Energy and Society: Investigation in Decision Making , Boulder, Colorado : Biological Sciences Curriculum Study .
- Kuhn , D. J. 1980 . “The Development and Application of an Energy Opinionnaire.” . The Journal of Environmental Education , : 25 – 28 . no. 4
- Lawrenz , F. P. 1982 . “Impact Assessment of 1981 Portal School Program.” , Tempe, AZ : Portal School Program, Physics Department, Arizona State University . Evaluation Report
- SAS Institute, Inc. 1979 . SAS User's Guide 1979 Edition , SAS Institute, Inc. . Box 800, Cary, North Carolina, 27511
- Wert , J. July 1975 . Energy-Environment Opinionnaire , July , Knoxville : University of Tennessee, Environmental Center . Eric Document Service, no. 125, 865