Ponca Tribe of Indians of Oklahoma & United States. Bureau of Indian Affairs. (1951). Constitution and bylaws of the Ponca Tribe of Indians, Oklahoma: Ratified September 20, 1950. U.S. G.P.O..
Chicago Style (17. basım) AtıfPonca Tribe of Indians of Oklahoma ve United States. Bureau of Indian Affairs. Constitution and Bylaws of the Ponca Tribe of Indians, Oklahoma: Ratified September 20, 1950. Washington: U.S. G.P.O., 1951.
MLA (8th ed.) AtıfPonca Tribe of Indians of Oklahoma ve United States. Bureau of Indian Affairs. Constitution and Bylaws of the Ponca Tribe of Indians, Oklahoma: Ratified September 20, 1950. U.S. G.P.O., 1951.
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