Citazione APA

Evans-Pritchard, E. E. E., & Fortes, M. E. (1987). African political systems.

Stile di citazione Chicago

Evans-Pritchard, E E; Ed, e M; Ed Fortes. African Political Systems. London, KPI, 1987.

Citazione MLA

Evans-Pritchard, E E; Ed, e M; Ed Fortes. African Political Systems. 1987.