APA (7th ed.) Citation

Geological Survey (U.S.), Washington (State). Division of Mines and Geology, & Geological Survey (U.S.). Geology of Washington.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Washington (State). Division of Mines and Geology, and Geological Survey (U.S.). Geology of Washington.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Geology of Washington.

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