United States. Government Accountability Office, United States. Congress. House. Committee on Natural Resources. Subcommittee on Fisheries, Wildlife, and Oceans, ebrary, Inc, & Taylor, E. B. (2010). Wildlife refuges: Factors and concerns about future sustainability. Nova Science Publishers.
Παραπομπή σε μορφή Chicago (17η εκδ.)United States. Government Accountability Office, Wildlife United States. Congress. House. Committee on Natural Resources. Subcommittee on Fisheries, Inc ebrary, και Earl B. Taylor. Wildlife Refuges: Factors and Concerns About Future Sustainability. New York: Nova Science Publishers, 2010.
Παραπομπή σε μορφή MLA (9th εκδ.)United States. Government Accountability Office, et al. Wildlife Refuges: Factors and Concerns About Future Sustainability. Nova Science Publishers, 2010.