Não informado. (1893). Alaska Fishery and Fur Seal Industries. U.S. Fish and Wildlife Service.
Chicago (17e ed.) BronvermeldingNão informado. Alaska Fishery and Fur Seal Industries. Washington: U.S. Fish and Wildlife Service, 1893.
MLA (8e ed.) BronvermeldingNão informado. Alaska Fishery and Fur Seal Industries. U.S. Fish and Wildlife Service, 1893.
Let op: Deze citaties zijn niet altijd 100% accuraat.