(1968). Geohydrologic maps of Fillmore County, Nebraska / [peta]. Washington, D C : Department of the Interior.
Chicago Style (17th ed.) CitationGeohydrologic Maps of Fillmore County, Nebraska / [peta]. Washington, D C : Department of the Interior, 1968.
MLA (9th ed.) CitationGeohydrologic Maps of Fillmore County, Nebraska / [peta]. Washington, D C : Department of the Interior, 1968.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.