APA (7th ed.) Citation

Não informado. (2004). Environmental geology notes. Illinois State Geological Survey.

Chicago Style (17th ed.) Citation

Não informado. Environmental Geology Notes. Naperville, Ill: Illinois State Geological Survey, 2004.

MLA (8th ed.) Citation

Não informado. Environmental Geology Notes. Illinois State Geological Survey, 2004.

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