Não informado. (2000). Bulletin of the Delaware University, Agricultural Experiment Station. Delaware Agricultural Experiment Station.
Chicago-Zitierstil (17. Ausg.)Não informado. Bulletin of the Delaware University, Agricultural Experiment Station. Newark, Del: Delaware Agricultural Experiment Station, 2000.
MLA-Zitierstil (8. Ausg.)Não informado. Bulletin of the Delaware University, Agricultural Experiment Station. Delaware Agricultural Experiment Station, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.