Leeming, F. C., Porter, B. E., Dwyer, W. O., Cobern, M. K. & Oliver, D. P. (1996). Effects of participation in class activities on children's environmental attitudes and knowledge. Journal of Environmental Education, 28, 2, 33-42.

Butler, S. M. & Francis, S. (1997). The effects of environmental attitudes on apparel purchasing behavior. Clothing and Textiles Research Journal, 15, 2, 76-85.

Heberlein, T. A. (1989). Attitudes and environmental management. Journal of Social Issues, 45, 1, 37-57.

Krauss, R. M. & Freedman, J. L. & Whitcup, M. (1978). Field and laboratory studies of littering. Journal of Experimental Social Psychology, 14, 1, 109-122.

Roberts, J. A. & Bacon, D. R. (1997). Exploring the subtle relationships between environmental concern and ecologically conscious consumer behavior. Journal of Business Research, 40, 1, 79-89.

Heslop, L. A., Moran, L. & Cousineau, A. (1981). "Consciousness" in energy conservation behavior: An exploratory study. Journal of Consumer Research, 8, 3, 299-305.

Petrzelka, P., Korsching, P. F. & Malia, J. E. (1996). Farmers' attitudes and behavior toward sustainable agriculture. Journal of Environmental Education, 28, 1, 38-44.

Gendrich, J. G (1982). A student-based anti-litter program for elementary schools. Education and Treatment of Children, 5, 4, 321-335.

Minton, A. P. & Rose, R. L. (1997). The effects of environmental concern on environmentally friendly consumer behavior: An exploratory study. Journal of Business Research, 40, 1, 37-48.

Casey, L. & Lloyd, M. (1977). Cost and effectiveness of litter removal procedures in an amusement park. Environment and Behavior, 9, 4, 535-546.