Ringelman, J. K. (1990). Waterfowl management handbook. U.S. Dept. of the Interior, Fish and Wildlife Service.
Chicago Style (17th ed.) CitationRingelman, James K. Waterfowl Management Handbook. Washington, D.C.: U.S. Dept. of the Interior, Fish and Wildlife Service, 1990.
MLA (9th ed.) CitationRingelman, James K. Waterfowl Management Handbook. U.S. Dept. of the Interior, Fish and Wildlife Service, 1990.
Warning: These citations may not always be 100% accurate.