APA (7th ed.) Citation

Ambrose, C. M. T., & Colorado Geological Survey. (1996). 1996 summary of coal resources in Colorado. Colorado Geological Survey, Department of Natural Resources.

Chicago Style (17th ed.) Citation

Ambrose, Carol Morgans Tremain., and Colorado Geological Survey. 1996 Summary of Coal Resources in Colorado. Denver, Colo.: Colorado Geological Survey, Department of Natural Resources, 1996.

MLA (8th ed.) Citation

Ambrose, Carol Morgans Tremain., and Colorado Geological Survey. 1996 Summary of Coal Resources in Colorado. Colorado Geological Survey, Department of Natural Resources, 1996.