Ramírez, P., & Armstrong, J. A. (1991). Trace element in existing wetlands and proposed mitigation sites in the U.S. Bureau of Reclamation's Shoshone Rehabilitation and Betterment Project, Park and Bighorn counties, Wyoming. [U.S. Fish and Wildlife Service].
Chicago Style (17th ed.) CitationRamírez, Pedro, and Joni A. Armstrong. Trace Element in Existing Wetlands and Proposed Mitigation Sites in the U.S. Bureau of Reclamation's Shoshone Rehabilitation and Betterment Project, Park and Bighorn Counties, Wyoming. [Washington, D.C.?]: [U.S. Fish and Wildlife Service], 1991.
MLA (9th ed.) CitationRamírez, Pedro, and Joni A. Armstrong. Trace Element in Existing Wetlands and Proposed Mitigation Sites in the U.S. Bureau of Reclamation's Shoshone Rehabilitation and Betterment Project, Park and Bighorn Counties, Wyoming. [U.S. Fish and Wildlife Service], 1991.