Library Diodorus Siculus Library of History, Book II
Chapter 21
Chapter 21: Later kings; luxury of the court
[8] The rest of the kings also followed his example, son p423 succeeding father upon the throne, and reigned for thirty generations down to Sardanapallus; for it was under this ruler that the Empire of the Assyrians fell to the Medes, after it had lasted more than thirteen hundred years,[49] as Ctesias of Cnidus says in his Second Book.
English translation by C. H. Oldfather, Loeb Classical Library (1933). Public domain. Digital text via Bill Thayer / LacusCurtius (University of Chicago).