APA (7th ed.) Citation

Geological Survey (U.S.) & Snook, J. R. (1990). Geologic map of the Inchelium quadrangle, Stevens and Ferry counties, Washington. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and James R. Snook. Geologic Map of the Inchelium Quadrangle, Stevens and Ferry Counties, Washington. Reston, Va.: The Survey, 1990.

MLA (9th ed.) Citation

Geological Survey (U.S.) and James R. Snook. Geologic Map of the Inchelium Quadrangle, Stevens and Ferry Counties, Washington. The Survey, 1990.