Brain, R. (1976). The tribal impulse: A new look at traditional communities. Macdonald and Janes.
Chicago-referens (17:e uppl.)Brain, Robert. The Tribal Impulse: A New Look at Traditional Communities. London: Macdonald and Janes, 1976.
MLA-referens (9:e uppl.)Brain, Robert. The Tribal Impulse: A New Look at Traditional Communities. Macdonald and Janes, 1976.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.