APA (7th ed.) Citation

Turco, M. J. (1999). Regional water-level changes for the Cambrian-Ordovician aquifer in Iowa, 1975 to 1997. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Turco, Michael J. Regional Water-level Changes for the Cambrian-Ordovician Aquifer in Iowa, 1975 to 1997. Iowa City, Iowa: U.S. Department of the Interior, U.S. Geological Survey, 1999.

MLA (9th ed.) Citation

Turco, Michael J. Regional Water-level Changes for the Cambrian-Ordovician Aquifer in Iowa, 1975 to 1997. U.S. Department of the Interior, U.S. Geological Survey, 1999.