Caliphs

The history of al-Tabarī.

translated and annotated by C. E. Bosworth.

Mahomet and his successors.

Edited by Henry A. Pochmann and E. N. Feltskog.

The court of the Caliphs: the rise and fall of Islam's greatest dynasty

Hugh Kennedy.

A little lower than the angels.

Geraldine McCaughrean

The History Of The Saracens: Comprising The Lives Of Mohammed And His Successors To The Death Of Abdalmelik, The Eleventh Caliph

Simon Ockley

The Caliphate: its rise, decline, and fall; from original sources

by Sir William Muir.

The history of the Saracens: comprising the lives of Mohammed and his successors, to the death of Abdalmelik, the eleventh caliph : with an account of their most remarkable battles, sieges, revolts, &c

collected from authentic sourcesespecially Arabic mss., by Simon Ockley

Lives of Mahomet and his successors.

Irving, Washington

Caliphate: the history of an idea

Hugh Kennedy

The Caliphate, its rise, decline, and fall: from original sources

by Sir William Muir.