Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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