APA (7th ed.) Citation

Geological Survey (U.S.) & Du Bray, E. A. (1994). Reconnaissance geologic map of the Sliderock Mountain area, Sweet Grass and Stillwater counties, Montana. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and E. A. Du Bray. Reconnaissance Geologic Map of the Sliderock Mountain Area, Sweet Grass and Stillwater Counties, Montana. Reston, Va.: The Survey, 1994.

MLA (9th ed.) Citation

Geological Survey (U.S.) and E. A. Du Bray. Reconnaissance Geologic Map of the Sliderock Mountain Area, Sweet Grass and Stillwater Counties, Montana. The Survey, 1994.