APA (7th ed.) Citation

Geological Survey (U.S.) & Berryhill, H. L., Jr. (1951). Coal resources map of Wyoming. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Henry L. Berryhill, Jr. Coal Resources Map of Wyoming. [Washington, D.C.]: The Survey, 1951.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Henry L. Berryhill, Jr. Coal Resources Map of Wyoming. The Survey, 1951.