APA (7th ed.) Citation

Kolpin, D. W., & Kalkhoff, S. J. (1992). Time of travel and dispersion in a selected reach of Roberts Creek, Clayton County, Iowa. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Kolpin, Dana W., and Stephen J. Kalkhoff. Time of Travel and Dispersion in a Selected Reach of Roberts Creek, Clayton County, Iowa. Iowa City, Iowa: U.S. Geological Survey, 1992.

MLA (9th ed.) Citation

Kolpin, Dana W., and Stephen J. Kalkhoff. Time of Travel and Dispersion in a Selected Reach of Roberts Creek, Clayton County, Iowa. U.S. Geological Survey, 1992.