ChavezD., & ParkerJ. (1995). Wilderness use in an urban setting.Unpublished manuscript. Riverside, CA: USDA Pacific Southwest Forest and Range Experiment Station.
2.
ColeD., WatsonA., & RoggenbuckJ. (1995). Trends in wilderness visitors and visits: Boundary Waters Canoe Area, Shining Rock, and Desolation Wildernesses. Research paper INT-RP-483. Fort Collins, CO: USDA Forest Service Intermountain Station.
3.
WinterP. (1996). San Gorgonio Wilderness visitor survey, summer and fall, 1994.Unpublished technical report. Riverside, CA: USDA Pacific Southwest Forest and Range Experiment Station.