M. Fortes, E. E. African political systems. Oxford University Press.
Lua i Stíl Chicago (17ú heag.)M. Fortes, E.E. Evans-Pritchard. African Political Systems. Oxford University Press.
Lua MLA (8ú heag.)M. Fortes, E.E. Evans-Pritchard. African Political Systems. Oxford University Press.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.