| AD 1230 - Mongol Khanate, German Empire, Mawahid Caliphate and Ayyubid Sultanate Colin McEvedy's The Penguin Atlas of Medieval History , pg. 75 |
| AD 1230 - Mongol Khanate, German Empire, Mawahid Caliphate and Ayyubid Sultanate Colin McEvedy's The Penguin Atlas of Medieval History , pg. 75 |