Não informado. (1980). Bulletin of the Arizona Agricultural Experiment Station. Arizona Agricultural Experiment Station.
Chicago-referens (17:e uppl.)Não informado. Bulletin of the Arizona Agricultural Experiment Station. Tucson, Ariz: Arizona Agricultural Experiment Station, 1980.
MLA-referens (8:e uppl.)Não informado. Bulletin of the Arizona Agricultural Experiment Station. Arizona Agricultural Experiment Station, 1980.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.