Não informado. (2008). University of California Publications in Agricultural Sciences. University of California Press.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. University of California Publications in Agricultural Sciences. Berkeley, Calif: University of California Press, 2008.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. University of California Publications in Agricultural Sciences. University of California Press, 2008.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.