APA (7th ed.) Citation

Norris, J. M., Robson, S. G., & Parker, R. S. (1986). Summary of hydrologic information for the Denver coal region, Colorado. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Norris, J. Michael, Stanley G. Robson, and R. S. Parker. Summary of Hydrologic Information for the Denver Coal Region, Colorado. Lakewood, Colorado: U.S. Geological Survey, 1986.

MLA (9th ed.) Citation

Norris, J. Michael, et al. Summary of Hydrologic Information for the Denver Coal Region, Colorado. U.S. Geological Survey, 1986.