Black, R. P., & Simaika, Y. M. (1951). The Nile Basin: The future conservation of the nile. eastern press.
Cita Chicago (17th ed.)Black, R. P., i Y. M. Simaika. The Nile Basin: The Future Conservation of the Nile. cairo: eastern press, 1951.
Cita MLA (9th ed.)Black, R. P., i Y. M. Simaika. The Nile Basin: The Future Conservation of the Nile. eastern press, 1951.
Atenció: Aquestes cites poden no estar 100% correctes.