- Bowman, Mary Lynne, The Development and Field Validation of an Instrument to Assess College Students' Attitudes Toward the Determinants of Environmental Issues, unpublished PhD dissertation, The Ohio State University, Columbus, 1972.
- Roth, Robert E., Fundamental Concepts for Environmental Management Education (K-16), unpublished PhD dissertation, University of Wisconsin–Madison, 1969.
- Roth, Robert E., Environmental Management Concepts–A List, technical report number 126, Wisconsin Research and Development Center for Cognitive Learning, Madison, 1970.
- U.S. Government Printing Office, Environmental Quality, The First Annual Report of the Council on Environmental Quality, Washington, D.C., 1970.
- Walker, Helen M.; Lev, Joseph, Elementary Statistical Methods. Holt, New York, 1943.
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