Hoffman, M. A. (1999). Egypt before the pharaohs. ARK.
Cita Chicago (17th ed.)Hoffman, Michael A. Egypt Before the Pharaohs. London: ARK, 1999.
Cita MLA (9th ed.)Hoffman, Michael A. Egypt Before the Pharaohs. ARK, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.