Não informado. (2000). Research and Farming. North Carolina Agricultural Experiment Station.
Chicago-Zitierstil (17. Ausg.)Não informado. Research and Farming. Raleigh, NC: North Carolina Agricultural Experiment Station, 2000.
MLA-Zitierstil (8. Ausg.)Não informado. Research and Farming. North Carolina Agricultural Experiment Station, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.