The Vikings: A Very Short Introduction

Safe for Democracy: The Secret Wars of the CIA

The Conversion of Scandinavia

Song of the Vikings: Snorri and the Making of Norse Myths

The World of Vikings

The Saga of the Volsungs: With the Saga of Ragnar Lothbrok

Vikings

Njal's Saga

Ibn Fadlan and the Land of Darkness: Arab Travellers in the Far North

Inventing the English Massacre: Amboyna in History and Memory

My Share of the Task: A Memoir

Ragnar Lothbrok: The Tale of a Viking Warrior King

Sketches in Holland and Scandinavia

The Northmen's Fury: A History of the Viking World

The Borgias: The Hidden History

Gold Run: The Rescue of Norway's Gold Bullion from the Nazis, 1940