R. P. Black & Y. M. Simaika. (1951). The Nile basin: The future conservation of the Nile. eastern press.
Tohutoru Kātū Chicago (17th ed.)R. P. Black me Y. M. Simaika. The Nile Basin: The Future Conservation of the Nile. Cairo: eastern press, 1951.
Tohutoro MLA (9th ed.)R. P. Black me Y. M. Simaika. The Nile Basin: The Future Conservation of the Nile. eastern press, 1951.
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