Barraclough, G. (1976). The crucible of Europe: The ninth and tenth centuries in European history. Thames and Hudson.
Chicago-Zitierstil (17. Ausg.)Barraclough, Geoffrey. The Crucible of Europe: The Ninth and Tenth Centuries in European History. London: Thames and Hudson, 1976.
MLA-Zitierstil (9. Ausg.)Barraclough, Geoffrey. The Crucible of Europe: The Ninth and Tenth Centuries in European History. Thames and Hudson, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.