Suvedi, M., Krueger, D., Shrestha, A. & Bettinghouse, D. (2000). Michigan citizens' knowledge and perceptions about groundwater. Journal of Environmental Education, 31, 2, 16-21.

Bogner, F. X. (1998). The influence of short-term outdoor ecology education on long-term variables of environmental perspective. Journal of Environmental Education, 29, 4, 17-29.

Eagles, P. F. & Demare, R. (1999). Factors influencing children's environmental attitudes. Journal of Environmental Education, 30, 4, 33-37.

Scott, W. & Oulton, C. (1999). Environmental education: Arguing the case for multiple approaches. Educational Studies, 25, 1, 89-97.

Smith-Sebasto, N. J. (1995). The effects of an environmental studies course on selected variables related to environmentally responsible behavior. Journal of Environmental Education, 26, 4, 30-34.

Nemiroff, L. S., & McKenzie-Mohr, D. (1992). Determinants and distinguishing variables of pro-disarmament behavior and responsible environmental behavior.. Journal of Social Behavior and Personality, 7, 1, 1-24.

Costanzo, M., Archer, D., Aronson, E., & Pettigrew, T. (1986). Energy conservation behavior: The difficult path from information to action. American Psychologist, 41, 5, 521-528.

Arcury, T. A. & Christianson, E. H. Rural-urban differences in environmental knowledge and actions. Vol. 25. 1993. 19-25.

Lyons, E. & Breakwell, G. M. (1994). Factors predicting environmental concern and indifference in 13- to 16-year-olds. Environment and Behavior, 26, 2, 223-228.

Hausbeck, K. W. & Milbrath, L. W. & Enright, S. M. (1992). Environmental knowledge, awareness and concern among 11th-grade students: New York State. Journal of Environmental Education, 24, 1, 27-34.