Cita APA (7th ed.)

(1968). Geohydrologic maps of Fillmore County, Nebraska / [peta]. Washington, D C : Department of the Interior.

Cita Chicago (17th ed.)

Geohydrologic Maps of Fillmore County, Nebraska / [peta]. Washington, D C : Department of the Interior, 1968.

Cita MLA (9th ed.)

Geohydrologic Maps of Fillmore County, Nebraska / [peta]. Washington, D C : Department of the Interior, 1968.