APA (7th ed.) Citation

Roberts, S. B., Hynes, J. L., & Woodward, C. L. (2001). Maps showing the extent of mining, locations of mine shafts, adits, air shafts, and bedrock faults, and thickness of overburden above abandoned coal mines in the Boulder-Weld Coal Field, Boulder, Weld, and Adams counties, Colorado (Version 1.0.). The Survey.

Chicago Style (17th ed.) Citation

Roberts, Stephen B., Jeffrey L. Hynes, and C. L. Woodward. Maps Showing the Extent of Mining, Locations of Mine Shafts, Adits, Air Shafts, and Bedrock Faults, and Thickness of Overburden Above Abandoned Coal Mines in the Boulder-Weld Coal Field, Boulder, Weld, and Adams Counties, Colorado. Version 1.0. Reston, Va.: The Survey, 2001.

MLA (9th ed.) Citation

Roberts, Stephen B., et al. Maps Showing the Extent of Mining, Locations of Mine Shafts, Adits, Air Shafts, and Bedrock Faults, and Thickness of Overburden Above Abandoned Coal Mines in the Boulder-Weld Coal Field, Boulder, Weld, and Adams Counties, Colorado. Version 1.0. The Survey, 2001.