Henry, Roger (2003) Synchronized chronology: Rethinking Middle East Antiquity: A Simple Correction to Egyptian Chronology Resolves the Major Problems in Biblical and Greek Archaeology Algora Publishing, New York, p. 138, ISBN0-87586-191-1
E. J. Brill's first encyclopaedia of Islam, 1913–1936, vol. 7, page 1037 citing Strabo and Ptolemy.
