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

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

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

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

Geller, E. S., Witmer, J. F. & Tuso, M. A. (1977). Environmental interventions for litter control.. Journal of Applied Psychology, 62, 3, 344-351.

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.

Dixon, R. S., Knott, T., Rowsell, H. & Sheldon, L. (1992). Prompts and posted feedback: In search of an effective method of litter control. Behaviour Change, 9, 1, 2-7.

Trinkaus, J. (1984). A bottle law: An informal look. Perceptual and Motor Skills, 59, 3, 806.

Cope, J. G., Huffman, K. T., Allred, L. J. & Grossnickle, W. F. (1993). Behavioral strategies to reduce cigarette litter. Journal of Social Behavior and Personality, 8, 4, 607-619.

Jason, L. A. & Zolik, E. S. (1980). Follow-up data on two dog-litter reduction interventions. American Journal of Community Psychology, 8, 6, 737-741.