TRANSLATIONS:
Rawlinson's edition with a version contains essays of the greatest value. It has been the standard for two generations and is not likely to be superseded.
The Loeb Series contains a version by A. D. Godley.
The great annotated edition of the text by R. W. Macan (Oxford) is the result of a lifetime's work. It contains everything necessary to confirm the claims of the historian.
The Great Persian War, by Grundy (London), is valuable.
See Bury, Ancient Greek Historians (Macmillan).