Não informado. (2008). University of California Publications in Agricultural Sciences. University of California Press.
Chicago-Zitierstil (17. Ausg.)Não informado. University of California Publications in Agricultural Sciences. Berkeley, Calif: University of California Press, 2008.
MLA-Zitierstil (8. Ausg.)Não informado. University of California Publications in Agricultural Sciences. University of California Press, 2008.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.