Siege

A Distant Mirror: The Calamitous 14th Century

Kingdom: Book Two of the Saladin Trilogy

The Time Traveller's Guide to Medieval England: A Handbook for Visitors to the Fourteenth Century

Green Mars

Eagle: Book One of the Saladin Trilogy

In Search of the Dark Ages

The Vikings: A Very Short Introduction

The History of the Medieval World: From the Conversion of Constantine to the First Crusade

Hannibal: Clouds of War

The Black Death: A History From Beginning to End

Medieval Warfare: A History

The Hollow Crown: The Wars of the Roses and the Rise of the Tudors

The Accursed Tower: The Fall of Acre and the End of the Crusades

Invader: Death Beach (1 in the Invader Novella Series)

Songs of the Women Troubadours

The Secret History of the Mongols

What on Earth Happened? ... In Brief: The Planet, Life and People from the Big Bang to the Present Day