Cita APA (7a ed.)

Ibrahim, E. M. (1961). Sudan. Rütten & Loening.

Cita Chicago Style (17a ed.)

Ibrahim, E. M. Sudan. Berlin: Rütten & Loening, 1961.

Cita MLA (8a ed.)

Ibrahim, E. M. Sudan. Rütten & Loening, 1961.