APA (7th ed.) Citation

Willoughby, T. C. (2000). Quality of wet deposition in the Grand Calumet River Watershed, northwestern Indiana, April 29, 1997-April 28, 1998. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Willoughby, Timothy C. Quality of Wet Deposition in the Grand Calumet River Watershed, Northwestern Indiana, April 29, 1997-April 28, 1998. Indianapolis, Indiana: U.S. Department of the Interior, U.S. Geological Survey, 2000.

MLA (9th ed.) Citation

Willoughby, Timothy C. Quality of Wet Deposition in the Grand Calumet River Watershed, Northwestern Indiana, April 29, 1997-April 28, 1998. U.S. Department of the Interior, U.S. Geological Survey, 2000.