f Xenophon, The Cyropædia (translated from the Greek by J.S. Watson and Henry Dale).
Chapter II. The Median or Scythian Empire
[b] Herodotus, op. cit.
[c] Theodore Nöldeke, article “Persia,” in the Encyclopædia Britannica.
d A. H. Sayce, The Higher Criticism and the Monuments.
e The Holy Bible.
f R. W. Rogers, History of Babylonia and Assyria.
g Ctesias, Persica.
h Berosus, Βαβυλωνικά.
i Strabo, Γεωγραφικά.