Não informado. Regulatory Announcement. U.S. Fish and Wildlife Service.
Chicago (17e ed.) BronvermeldingNão informado. Regulatory Announcement. Washington: U.S. Fish and Wildlife Service.
MLA (8e ed.) BronvermeldingNão informado. Regulatory Announcement. U.S. Fish and Wildlife Service.
Let op: Deze citaties zijn niet altijd 100% accuraat.