Levitt, L., & Leventhal, G. (1986). Litter reduction: How effective is the New York State Bottle Bill?. Environment and Behavior, 18, 4, 467-479.

Crosby, L. A., Gill, J. D., & Taylor, J. R. (1981). Consumer/voter behavior in the passage of the Michigan container law. Journal of Marketing, 45, 2, 19-32.

RCO Workshop Proceedings (1996). Implementing garbage user fees in Ontario. Toronto, ON: Recycling Council of Ontario.

Hamad, C. D., Cooper, D. & Semb, G. (1977). Resource recovery: Use of a group contingency to increase paper recycling in an elementary school. Journal of Applied Psychology, 62, 6, 768-772.

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

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

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

Chapman, C. & Risley, T. R. (1974). Anti-litter procedures in an urban high-density area. Journal of Applied Behavior Analysis, 7, 3, 377-383.

Baltes, M. M. & Hayward, S. C. (1976). Application and evaluation of strategies to reduce pollution: Behavioral control of littering in a football stadium. Journal of Applied Psychology, 61, 4, 501-506.

Kohlenberg, R. & Phillips, T. (1973). Reinforcement and rate of litter depositing. Journal of Applied Behavior Analysis, 6, 3, 391-396.