APA (7th ed.) Citation

Gurdak, J. J., Greve, A. I., & Spahr, N. E. (2002). Water-quality data analysis of the upper Gunnison River watershed, Colorado, 1989-99. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Gurdak, Jason J., Adrienne I. Greve, and Norman E. Spahr. Water-quality Data Analysis of the Upper Gunnison River Watershed, Colorado, 1989-99. Denver, Colo.: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.

MLA (9th ed.) Citation

Gurdak, Jason J., et al. Water-quality Data Analysis of the Upper Gunnison River Watershed, Colorado, 1989-99. U.S. Dept. of the Interior, U.S. Geological Survey, 2002.