Não informado. (1949). Special Scientific Report. U.S. Fish and Wildlife Service.
Style de citation Chicago (17e éd.)Não informado. Special Scientific Report. Seattle, Wash: U.S. Fish and Wildlife Service, 1949.
Style de citation MLA (8e éd.)Não informado. Special Scientific Report. U.S. Fish and Wildlife Service, 1949.
Attention : ces citations peuvent ne pas être correctes à 100%.