KENNEDY, Hugh The Prophet and the Age of the Caliphates / - 2nd ed. - England : Pearson Education Limited , 2004 . - xiv ,419 p . : ill . ; map ; 23 cm Includes index ISBN: 0582405254 Subjects--Topical Terms: Islamic Empire HistoryIslamic LeadershipIslamic Caliphs Dewey Class. No.: 297.64