The historians' history of the world in twenty-five volumes, volume 01
CHAPTER II. OLD BABYLONIAN HISTORY
[b] HUGO RADAU, _Early Babylonian History down to the IVth Dynasty of Ur_.
[c] A. H. SAYCE, from the article “Babylonia and Assyria,” in the New Volumes of the Ninth Edition of the _Encyclopædia Britannica_.
[d] E. A. T. W. BUDGE, _Babylonian Life and History_.