GULEN , M . Fethullah . Uchambuzi wa Maisha ya Nabii Muhammad : mjumbe wa Mwenyezi Mungu . - New Jesrsey : Tughra books , 2008 . - xii , 598 p . : maps ; 23 cm . Includings index ISBN: 9781597840545 Subjects--Topical Terms: Biography Dewey Class. No.: 920