APA (7th ed.) Citation

Geological Survey (U.S.) & Tabor, R. W. (1993). Geologic map of the Skykomish River 30- by 60-minute quadrangle, Washington. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and R. W. Tabor. Geologic Map of the Skykomish River 30- by 60-minute Quadrangle, Washington. Reston, VA: The Survey, 1993.

MLA (9th ed.) Citation

Geological Survey (U.S.) and R. W. Tabor. Geologic Map of the Skykomish River 30- by 60-minute Quadrangle, Washington. The Survey, 1993.