Perrine, J. D., Campbell, L. A., & Green, G. A. (2010). Sierra Nevada red fox (Vulpes vulpes necator): A conservation assessment. United States Department of Agriculture, U.S. Forest Service.
Chicago Style (17th ed.) CitationPerrine, John D., Lori A. Campbell, and Gregory A. Green. Sierra Nevada Red Fox (Vulpes Vulpes Necator): A Conservation Assessment. [Washington, D.C.]: United States Department of Agriculture, U.S. Forest Service, 2010.
MLA (9th ed.) CitationPerrine, John D., et al. Sierra Nevada Red Fox (Vulpes Vulpes Necator): A Conservation Assessment. United States Department of Agriculture, U.S. Forest Service, 2010.
Warning: These citations may not always be 100% accurate.