Não informado. (1902). University of California publications in zoology. University of California Press.
Chicago-referens (17:e uppl.)Não informado. University of California Publications in Zoology. Berkeley, Calif: University of California Press, 1902.
MLA-referens (8:e uppl.)Não informado. University of California Publications in Zoology. University of California Press, 1902.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.