Reiter, S. M. & Samuel, W. (1980). Littering as a function of prior litter and the presence or absence of prohibitive signs . Journal of Applied Social Psychology, 10, 1, 45-55.

Schultz, P. W. (1995). A field experiment on interventions to improve curbside recycling. Dissertation Abstracts International: Section B: The Sciences and Engineering, 56, 5-B,

Lucia, M. (1990). The effects of personal communication strategies on curbside recycling. Dissertation Abstracts International, 51, 6-B,

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,

Littlejohn, C. R. (1997). Measuring the effects of message framing on the behavior of recycling in a residential recycling program. Dissertation Abstracts International Section A: Humanities and Social Sciences, 58, 3-A,

Phillips, E. L. Jr. (1994). Factors that affect attitudes towards and participation in mandated curbside recycling programs. Dissertation Abstracts International Section A: Humanities and Social Sciences, 54, 11-A,

Lai, M. j. (1991). Analysis of consumer attitudes in Michigan about products containing recycled materials. Dissertation Abstracts International, 52, 6-B,

Minton, A. P. (1995). Chronic norm focus: The interaction effects of norms and dispositions on environmentally friendly consumer behaviors. Dissertation Abstracts International Section A: Humanities and Social Sciences, 55, 12-A,

Mobley, A. S., Painter, T. S., Untch, E. M. & Unnava, H. R. (1995). Consumer evaluation of recycled products. Psychology and Marketing, 12, 3, 165-176.

Seal, D. W., Bogart, L. M. & Ehrhardt, A. A. (1998). Small group dynamics: The utility of focus group discussions as a research method. Group Dynamics, 2, 4, 253-266.