Não informado. (2001). Special report. New York State Agricultural Experiment Station.
Chicago-viite (17. p.)Não informado. Special Report. Geneva, NY: New York State Agricultural Experiment Station, 2001.
MLA-viite (8. p.)Não informado. Special Report. New York State Agricultural Experiment Station, 2001.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.