Harned, D. (1995). Effects of agricultural land management practices on water quality in northeastern Guilford County, North Carolina: 1985 - 90. United States Gov. Print. Off.
Chicago-Zitierstil (17. Ausg.)Harned, Douglas. Effects of Agricultural Land Management Practices on Water Quality in Northeastern Guilford County, North Carolina: 1985 - 90. Washington: United States Gov. Print. Off, 1995.
MLA-Zitierstil (9. Ausg.)Harned, Douglas. Effects of Agricultural Land Management Practices on Water Quality in Northeastern Guilford County, North Carolina: 1985 - 90. United States Gov. Print. Off, 1995.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.