Kingdom of Jerusalem
| Author(s) | Title | Reference | |
|---|---|---|---|
| R.M. Morgan | The Feudal Nobility and the Kingdom of Jerusalem 1174-1277, by Jonathan Riley-Smith | 45/1, p. 135 | |
| NORMAN HOUSLEY | Louis IX and the Challenge of the Crusade. A Study in Rulership, by William Chester Jordan | 50/1, p. 186 |