APA (7th ed.) Citation

Geological Survey, Johnson, E. A., & Brownfield, M. E. (1988). Regional correlation of the middle coal group of the upper Cretaceous Mesaverde group, Yampa Coal Field, Moffat and Routt counties, Colorado. The Survey ; For sale by Map Distribution.

Chicago Style (17th ed.) Citation

Geological Survey, Edward A. Johnson, and M. E. Brownfield. Regional Correlation of the Middle Coal Group of the Upper Cretaceous Mesaverde Group, Yampa Coal Field, Moffat and Routt Counties, Colorado. Reston, Va. : Denver, CO: The Survey ; For sale by Map Distribution, 1988.

MLA (8th ed.) Citation

Geological Survey, et al. Regional Correlation of the Middle Coal Group of the Upper Cretaceous Mesaverde Group, Yampa Coal Field, Moffat and Routt Counties, Colorado. The Survey ; For sale by Map Distribution, 1988.