Não informado. (1933). Indians at work. U.S. Office of Indian Affairs.
Chicagoスタイル(17版)引用形式Não informado. Indians at Work. Washington: U.S. Office of Indian Affairs, 1933.
MLA(8版)引用形式Não informado. Indians at Work. U.S. Office of Indian Affairs, 1933.
警告: この引用は必ずしも正確ではありません.