Gwatkin, H. M. (1975). Cambridge medieval history, Vol.1: The Christian Roman empire and the foundation of the Teutonic kingdoms. Cambridge University Press.
Chicago Edition CitationGwatkin, H M. Cambridge Medieval History, Vol.1: The Christian Roman Empire and the Foundation of the Teutonic Kingdoms. Cambridge: Cambridge University Press, 1975.
MLA Edition CitationGwatkin, H M. Cambridge Medieval History, Vol.1: The Christian Roman Empire and the Foundation of the Teutonic Kingdoms. Cambridge University Press, 1975.
Warning: These citations may not always be 100% accurate.