Dyfyniad APA
Barraclough, G. (1976). The Crucible of Europe: The Ninth and Tenth Centuries in European History. University of California Press.
Dyfyniad Arddull Chicago
Barraclough, Geoffrey. The Crucible of Europe: The Ninth and Tenth Centuries in European History. Berkeley: University of California Press, 1976.
Dyfyniad MLA
Barraclough, Geoffrey. The Crucible of Europe: The Ninth and Tenth Centuries in European History. University of California Press, 1976.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.