Westphal, J. M., & Halverson, W. F. (1986). Assessing the long-term effects of an environmental education program: A pragmatic approach. Journal of Environmental Education, 17, 2, 26-30.

Ryan, C. (1991). The effect of a conservation program on schoolchildren’s attitudes toward the environment. Journal of Environmental Education, 22, 4, 30-35.

Simmons, D. A. (1991). Are we meeting the goal of responsible environmental behavior? An examination of nature and environmental education center goals. Journal of Environmental Education, 22, 3, 16-21.

Kearney, A. R., & De Young, R. (1995). A knowledge-based intervention for promoting carpooling. Environment and Behavior, 27, 5, 650-678.

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.

Syme, G. J., Seligman, C., Kantola, S. J., & MacPherson, D. K. (1987). Evaluating a television campaign to promote petrol conservation. Environment and Behavior, 19, 4, 444-461.

King County commission for Marketing Recyclable Materials & Atwood, A. M. (1994). Consumer research survey: Knowledge, attitudes, and purchase of recycled-content products. King County Commission for Marketing Recyclable Materials.

Legault, Louise; Pelletier, Luc G. (2000). "Impact of an environmental education program on students' and parents' attitudes, motivation, and behaviours.". Canadian Journal of Behavioural Science, 32, 4, 243-250.

Bang, Hae-Kyong; Ellinger, Alexander E.; Hadjimarcou, John; Traichal, Patrick A. (2000). "Consumer concern, knowledge, belief, and attitude toward renewable energy: An application of the reasoned action theory.". Psychology & Marketing, 17, 6, 449-468.

Gerakis, A. (1998). Evaluating adult groundwater education. Journal of Environmental Education, 30, 1, 20-24.