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== Referensi ==
{{refbegin|colwidth=30em}}
* {{cite book |last=Baldwin |first=M. W.|title=The first hundred years|location=Madison, WI|publisher=University of Wisconsin Press|year=1969}}
* {{cite book |last=Barraclough |first=Geoffrey|title=The Origins of Modern Germany|year=1984|publisher=W. W. Norton & Company|location=New York|pages=481|isbn=0-393-30153-2}}
* {{cite book |last=Brundage |first=James|title=The Crusades: A Documentary History|location=Milwaukee, WI|publisher= Marquette University Press|year=1962}}
* {{cite book |last=Christiansen |first=Eric |title=The Northern Crusades|year=1997|publisher=Penguin Books|location=London|pages=287|isbn=0-14-026653-4}}
* {{cite book |last=Davies |first=Norman |authorlink=Norman Davies |title=Europe: A History|year=1996|publisher=Oxford University Press|location=Oxford|pages=1365|isbn=0-06-097468-0}}
* {{cite book |last=Herrmann |first=Joachim|authorlink=|title=Die Slawen in Deutschland|year=1970|publisher=Akademie-Verlag GmbH|location=Berlin|pages=530}}
* {{cite book |last=Norwich |first=John Julius |authorlink=John Julius Norwich |title=Byzantium: the Decline and Fall |year=1995 |publisher=Viking |isbn=9780670823772}}
* {{cite book |author=Riley-Smith, Jonathan |author-link=Jonathan Riley-Smith |title=Atlas of the Crusades|location=New York|publisher=Facts on File|year=1991}}
* {{cite book |author=Riley-Smith, Jonathan |author-link=Jonathan Riley-Smith |title=The Crusades: A Short History|edition=Second |publisher=Yale University Press |location=New Haven, CT |year=2005 |isbn=0-300-10128-7}}
* {{cite book|last=Runciman|first=Steven|title=A History of the Crusades, vol. II: The Kingdom of Jerusalem and the Frankish East, 1100–1187|publisher=Cambridge University Press|year=1952; repr. Folio Society, 1994}}
* {{cite book |author=Tyerman, Christopher |title=God's War: A New History of the Crusades |publisher=Belknap Press of Harvard University Press |location=Cambridge |year=2006 |isbn=0-674-02387-0 }}
* {{cite book |author=William of Tyre |authorlink=William of Tyre |last2=Babcock |first2=E. A. |last3=Krey |first3=A. C. |title=A History of Deeds Done Beyond the Sea |year=1943 |publisher=Columbia University Press |id={{OCLC|310995}}}}
{{refend}}
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