1. Cantrell, D. 1987.A case study analysis of curriculum implementation as exemplified by Project WILD in one midwestern state, Ph.D. diss. 426 Ohio State University
2. Disinger, J., ed. 1987.Trends and issues in environmental education: EE in school curricula: Reports of a symposium and a survey, 152Columbus, OH: ERIC/SMEAC.
3. Back to Definitions in Environmental Education: The Case of Inland Northwest Camps