Cita APA (7a ed.)

Potholm, C. P. (1970). Four African political systems. Prentice-Hall.

Cita Chicago Style (17a ed.)

Potholm, Christian P. Four African Political Systems. Englewood Cliffs, NJ: Prentice-Hall, 1970.

Cita MLA (9a ed.)

Potholm, Christian P. Four African Political Systems. Prentice-Hall, 1970.