Style de citation APA (7e éd.)

(1973). Geologic sections, Jackson Purchase region, Kentucky, and adjacent areas. Washington, D C : Department of the Interior.

Style de citation Chicago (17e éd.)

Geologic Sections, Jackson Purchase Region, Kentucky, and Adjacent Areas. Washington, D C : Department of the Interior, 1973.

Style de citation MLA (9e éd.)

Geologic Sections, Jackson Purchase Region, Kentucky, and Adjacent Areas. Washington, D C : Department of the Interior, 1973.