Não informado. (1933). Indians at work. U.S. Office of Indian Affairs.
Style de citation Chicago (17e éd.)Não informado. Indians at Work. Washington: U.S. Office of Indian Affairs, 1933.
Style de citation MLA (8e éd.)Não informado. Indians at Work. U.S. Office of Indian Affairs, 1933.
Attention : ces citations peuvent ne pas être correctes à 100%.