Geological Survey (U.S.) & Iowa Geological Survey. (1987). Winnebago County, Iowa, 1986: 1:100 000-scale topographic map. U.S. Geological Survey ; Iowa Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and Iowa Geological Survey. Winnebago County, Iowa, 1986: 1:100 000-scale Topographic Map. Reston, Va. : Iowa City, Iowa: U.S. Geological Survey ; Iowa Geological Survey, 1987.
MLA (9th ed.) CitationGeological Survey (U.S.) and Iowa Geological Survey. Winnebago County, Iowa, 1986: 1:100 000-scale Topographic Map. U.S. Geological Survey ; Iowa Geological Survey, 1987.
Warning: These citations may not always be 100% accurate.