Gregory, Robert J. (2003). "Tribes and Tribal: Origin, Use, and Future of the Concept". Studies of Tribes and Tribals. 1: 1–5. doi:10.1080/0972639X.2003.11886479. S2CID 46994567.

In "Tribes and Tribal: Origin, Use, and Future of the Concept," Robert J. Gregory explores the origin and use of the concept of tribes in social and cultural contexts. The article traces the history of the term "tribe" and its various connotations, from the early anthropological use to its current application in modern society. The article argues that the concept of tribes is still relevant today, and can be applied to various social groups, including digital tribes.