APA (7th ed.) Citation

Geological Survey (U.S.), Southern Ute Tribe, Roberts, L. N. R., & Uptegrove, J. (1991). Coal geology and preliminary coal zone correlations in the Fruitland Formation, western part of the southern Ute Indian Reservation, La Plata County, Colorado. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Southern Ute Tribe, Laura N. Robinson Roberts, and Jane Uptegrove. Coal Geology and Preliminary Coal Zone Correlations in the Fruitland Formation, Western Part of the Southern Ute Indian Reservation, La Plata County, Colorado. Reston, Va.: The Survey, 1991.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. Coal Geology and Preliminary Coal Zone Correlations in the Fruitland Formation, Western Part of the Southern Ute Indian Reservation, La Plata County, Colorado. The Survey, 1991.