Παραπομπή σε μορφή APA (7η εκδ.)

United States Geological Survey. (1978). Suggestions to authors of the reports of the United States Geological Survey (6th ed.). U.S. Govt. Print. Off.

Παραπομπή σε μορφή Chicago (17η εκδ.)

United States Geological Survey. Suggestions to Authors of the Reports of the United States Geological Survey. 6th ed. Washington: U.S. Govt. Print. Off, 1978.

Παραπομπή σε μορφή MLA (9th εκδ.)

United States Geological Survey. Suggestions to Authors of the Reports of the United States Geological Survey. 6th ed. U.S. Govt. Print. Off, 1978.