APA (7th ed.) Citation

Não informado. (1999). United States Geological Survey annual report. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Não informado. United States Geological Survey Annual Report. Washington: U.S. Geological Survey, 1999.

MLA (8th ed.) Citation

Não informado. United States Geological Survey Annual Report. U.S. Geological Survey, 1999.

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