1. The unintended effects of a posted sign on littering attitudes and stated intentions Collection: Agricultural Communications Documentation Center (ACDC) Contributers: Horsley, A. Doyne (author) Format: Journal article Publication Date: 1988 Published: USA Location: Agricultural Communications Documentation Center, Funk Library, University of Illinois Document Number: C18363 Journal Title: Journal of Environmental Education Journal Title Details: 19(3) : 10-14