Burkart, M. R. (1984). Availability and quality of water from the Dakota aquifer, Northwest Iowa. United States Gov. Print. Off.
Chicago-Zitierstil (17. Ausg.)Burkart, M. R. Availability and Quality of Water from the Dakota Aquifer, Northwest Iowa. Washington: United States Gov. Print. Off, 1984.
MLA-Zitierstil (9. Ausg.)Burkart, M. R. Availability and Quality of Water from the Dakota Aquifer, Northwest Iowa. United States Gov. Print. Off, 1984.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.