APA (7th ed.) Citation

Geological Survey (U.S.) & Booth, D. B. (1989). Surficial geologic map of the Granite Falls 15-minute quadrangle, Snohomish County, Washington. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Derek B. Booth. Surficial Geologic Map of the Granite Falls 15-minute Quadrangle, Snohomish County, Washington. Reston, Va.: The Survey, 1989.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Derek B. Booth. Surficial Geologic Map of the Granite Falls 15-minute Quadrangle, Snohomish County, Washington. The Survey, 1989.