Schultz, P. W., Oskamp, S., & Mainieri, T. (1995). Who recycles and when? A review of personal and situational factors. Journal of Enviornmental Psychology, 15, 2, 105-121.

Oskamp, S. (1995). Resource conservation and recycling: Behavior and policy. Journal of Social Issues, 51, 4, 157-177.

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.

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

Kim, S. M. (1995). An investigation of strategies, incentives, and operational characteristics of recycling programs. Dissertation Abstracts International: Section B: The Sciences and Engineering, 56, 4-B,

Palmer, Karen L; Sigman, Hilary; Walls, Margaret (1997). The cost of reducing municipal solid waste. Journal of Environmental Economics and Management , 33, 128-150.

McKenzie-Mohr, D. & Oskamp, S. (1995). Psychology and Sustainability: An Introduction. Journal of Social Issues, 51, 4, 1-14.