1 2 3 4 Michel Parisse, "Lotharingia", The New Cambridge Medieval History, III: c. 900–c. 1024, ed. Timothy Reuter (Cambridge: Cambridge University Press, 2005), 313–15.
↑ Gwatking, H. M., Whitney, J. P., et al. Cambridge Medieval History: Volume III—Germany and the Western Empire.
↑ Jean Dunbabin, "West Francia: The Kingdom", The New Cambridge Medieval History, III: c. 900–c. 1024, ed. Timothy Reuter (Cambridge: Cambridge University Press, 2005), 378–79.
