Brain, R. (1976). The tribal impulse: A new look at traditional communities. Macdonald and Janes.
Lua i Stíl Chicago (17ú heag.)Brain, Robert. The Tribal Impulse: A New Look at Traditional Communities. London: Macdonald and Janes, 1976.
Lua MLA (9ú heag.)Brain, Robert. The Tribal Impulse: A New Look at Traditional Communities. Macdonald and Janes, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.