Não informado. (2008). University of California Publications in Agricultural Sciences. University of California Press.
Chicago-referens (17:e uppl.)Não informado. University of California Publications in Agricultural Sciences. Berkeley, Calif: University of California Press, 2008.
MLA-referens (8:e uppl.)Não informado. University of California Publications in Agricultural Sciences. University of California Press, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.