APA (7th ed.) Citation

Geological Survey (U.S.), Boulder (Colo.), & Murphy, S. F. (2006). State of the watershed: Water quality of Boulder Creek, Colorado. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.), Boulder (Colo.), and Sheila F. Murphy. State of the Watershed: Water Quality of Boulder Creek, Colorado. Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 2006.

MLA (9th ed.) Citation

Geological Survey (U.S.), et al. State of the Watershed: Water Quality of Boulder Creek, Colorado. U.S. Dept. of the Interior, U.S. Geological Survey, 2006.