1. What's New About Environmental Education?
2. One Cosmic Instant: Man's Fleeting Supremacy, New York: Dell, 1973.
3. “The taxonomy of educational objectives—-Its use in curriculum building,” in Contemporary Thought on Public School Curriculum, and (Eds.), Dubuque, Iowa: Brown, 1964, pp. 271–279.
4. Assessing College Student Attitudes Toward Environmental Issues
5. “A survey of environmental knowledge and attitudes of tenth and twelfth grade students from four southwestern slates, six mideastern states and twelve plains and mountain states,” Doctoral dissertation, The Ohio State University, 1974.