Catlin, G., & Ewers, J. C. (1967). O-kee-pa: A religious ceremony, and other customs of the Mandans (Centennial ed.). Yale University Press.
Chicago Style (17th ed.) CitationCatlin, George, and John C. Ewers. O-kee-pa: A Religious Ceremony, and Other Customs of the Mandans. Centennial ed. New Haven: Yale University Press, 1967.
MLA (9th ed.) CitationCatlin, George, and John C. Ewers. O-kee-pa: A Religious Ceremony, and Other Customs of the Mandans. Centennial ed. Yale University Press, 1967.
Warning: These citations may not always be 100% accurate.