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