สงครามครูเสดลิโวเนีย (Thai Wikipedia)

Analysis of information sources in references of the Wikipedia article "สงครามครูเสดลิโวเนีย" in Thai language version.

refsWebsite

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Urban, William (1981). Livonian Crusade. University Press of America. ISBN 0819116831.
Riley-Smith, Jonathan (2005). The Crusades: A History. Continuum International Publishing Group. p. 161. ISBN 0826472699.
Bilmanis, Alfreds (1944). Latvian-Russian Relations: Documents. The Latvian legation.
Herbermann, Charles George (1907). The Catholic Encyclopedia. Robert Appleton Company.
Bilmanis, Alfreds (1945). The Church in Latvia. Drauga vēsts.