 
| Type | Valeur | 
|---|---|
| Titre | The Rise of the Medieval World, 5090-1300: A Biographical Dictionary | 
| Personnes | 
|---|
|  KARL 'Martel ' Herzog und Prinz der Franken | 
| Schulman, Jana K. (2002).  The Rise of the Medieval World, 500-1300: A Biographical Dictionary.  Greenwood Publishing Group. p 101 ISBN 0-313-30817-9 Found on a sample page from Google Books. |