APA (7th ed.) Citation

Spahr, N. E., Boulger, R. W., & Szmajter, R. J. (2000). Water quality at basic fixed sites in the Upper Colorado River Basin National Water-Quality Assessment study unit, October 1995-September 1998. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Spahr, Norman E., Robert W. Boulger, and Richard J. Szmajter. Water Quality at Basic Fixed Sites in the Upper Colorado River Basin National Water-Quality Assessment Study Unit, October 1995-September 1998. Denver, Colo.: U.S. Dept. of the Interior, U.S. Geological Survey, 2000.

MLA (9th ed.) Citation

Spahr, Norman E., et al. Water Quality at Basic Fixed Sites in the Upper Colorado River Basin National Water-Quality Assessment Study Unit, October 1995-September 1998. U.S. Dept. of the Interior, U.S. Geological Survey, 2000.