Title: Visitor employed photography: its potential and use in evaluating visitors' perceptions of resource impacts in trail and park settings

Author: Dorwart, Catherine E.; Moore, Roger L.; Leung, Yu-Fai

Date: 2007

Source: In: Burns, R.; Robinson, K., comps. Proceedings of the 2006 Northeastern Recreation Research Symposium; 2006 April 9-11; Bolton Landing, NY. Gen. Tech. Rep. NRS-P-14. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station: 307-315.


http://nrs.fs.fed.us/pubs/gtr/gtr_nrs-p-14/41-dorwart-p-14.pdf