Uys, Jamie. The Gods Must Be Crazy. C.A.T. Films, 10 Sep. 1980.
Christensen, James Boyd. 1963. “Utani: Joking, Sexual License and Social Obligations Among the Luguru.” American Anthropologist. No. 65. p. 1317.
[Below are some sources for the moiety system by continent:]
Chala, Dejene Gemechu. 2017. “Indigenous Federation: The Case of the Borana Oromo, Ethiopia.” The International Indigenous Policy Journal. Vol. 8. Issue 1. Article 2. p. 1.
Hatto, Arthur. 2017. The World of the Khanty Epic Hero-Princes: An Exploration of a Siberian Oral tradition. Cambridge University Press. p. 12.
Mathews, R. H. 1898. “Australian Divisional Systems.” Journal and Proceedings of the Royal Society of New South Wales. Vol. 32. pp. 66-87
McClellan, Catherine & Denniston, Glenda. 1981. “Environment and Culture in the Cordillera.” In Subarctic, edited by J. Helm, pp. 372-386. Handbook of North American Indians. Vol. 6. Smithsonian Institution Press, Washington, D.C.
Stewart, Julian H. (editor) 1948. Handbook of South American Indians. Vol 3. The Tropical Forest Tribes. United States Government Printing Office, Washington. p. 290.