APA (7th ed.) Citation

Sandberg, D. T., & Zech, R. S. (1990). Coal resources of upper Cretaceous Fruitland Formation in the Southern Ute Indian Reservation, southwestern Colorado. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Sandberg, Dorothy T., and R. S. Zech. Coal Resources of Upper Cretaceous Fruitland Formation in the Southern Ute Indian Reservation, Southwestern Colorado. [Reston, Va.]: Dept. of the Interior, U.S. Geological Survey, 1990.

MLA (9th ed.) Citation

Sandberg, Dorothy T., and R. S. Zech. Coal Resources of Upper Cretaceous Fruitland Formation in the Southern Ute Indian Reservation, Southwestern Colorado. Dept. of the Interior, U.S. Geological Survey, 1990.