APA (7th ed.) Citation

Willoughby, T. C., & Siddeeq, Q. A. (2001). An estimate of chemical loads from ground water to the Grand Calumet River and Indiana Harbor Canal, northwestern Indiana. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Willoughby, Timothy C., and Qaadir A. Siddeeq. An Estimate of Chemical Loads from Ground Water to the Grand Calumet River and Indiana Harbor Canal, Northwestern Indiana. Indianapolis, Ind.: U.S. Dept. of the Interior, U.S. Geological Survey, 2001.

MLA (9th ed.) Citation

Willoughby, Timothy C., and Qaadir A. Siddeeq. An Estimate of Chemical Loads from Ground Water to the Grand Calumet River and Indiana Harbor Canal, Northwestern Indiana. U.S. Dept. of the Interior, U.S. Geological Survey, 2001.