APA (7th ed.) Citation

Não informado. (2001). Annual report of the United States Geological Survey. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Não informado. Annual Report of the United States Geological Survey. Washington: U.S. Geological Survey, 2001.

MLA (8th ed.) Citation

Não informado. Annual Report of the United States Geological Survey. U.S. Geological Survey, 2001.

Warning: These citations may not always be 100% accurate.