Cita APA

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

Citación estilo Chicago

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.

Cita MLA

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