APA (7th ed.) Citation

Chafin, D. T. (2002). Evaluation of trends in pH in the Yampa River, northwestern Colorado, 1950-2000. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Chafin, Daniel T. Evaluation of Trends in PH in the Yampa River, Northwestern Colorado, 1950-2000. Denver, Colo.: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.

MLA (9th ed.) Citation

Chafin, Daniel T. Evaluation of Trends in PH in the Yampa River, Northwestern Colorado, 1950-2000. U.S. Dept. of the Interior, U.S. Geological Survey, 2002.