APA način citiranja (7. izdanje)
Barraclough, G. (1976). The Crucible of Europe: The Ninth and Tenth Centuries in European History. University of California Press.
Čikaški stil citiranja (17. izdanje)
Barraclough, Geoffrey. The Crucible of Europe: The Ninth and Tenth Centuries in European History. Berkeley: University of California Press, 1976.
MLA način citiranja (9. izdanje)
Barraclough, Geoffrey. The Crucible of Europe: The Ninth and Tenth Centuries in European History. University of California Press, 1976.
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