APA (7th ed.) Citation

Thomas, B. E., Embrey, S. S., & Wilkinson, J. M. (1997). The ground-water system and ground-water quality in western Snohomish County, Washington. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Thomas, Blakemore E., S. S. Embrey, and J. M. Wilkinson. The Ground-water System and Ground-water Quality in Western Snohomish County, Washington. Tacoma, Washington: U.S. Geological Survey, 1997.

MLA (9th ed.) Citation

Thomas, Blakemore E., et al. The Ground-water System and Ground-water Quality in Western Snohomish County, Washington. U.S. Geological Survey, 1997.