Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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