APA (7th ed.) Citation

(1991). Coal map of Wyoming. Geological Survey of Wyoming.

Chicago Style (17th ed.) Citation

Coal Map of Wyoming. [Laramie, Wyo.]: Geological Survey of Wyoming, 1991.

MLA (9th ed.) Citation

Coal Map of Wyoming. Geological Survey of Wyoming, 1991.

Warning: These citations may not always be 100% accurate.