Old Polish
| Author(s) | Title | Reference | |
|---|---|---|---|
| Steven Runciman | The Northern Crusades: the Baltic and the Catholic Frontier, 1100-1525, by Eric Christiansen | 51/1, p. 120 |
| Author(s) | Title | Reference | |
|---|---|---|---|
| Rob Avis | Rómverja saga, ed. Þorbjörg Helgadóttir | 80/1, p. 364 |