Louis John Paetow, A Guide to the Study of Medieval History for Students, Teachers, and Libraries, Berkeley: University of California, 1917, OCLC185267056, p. 150, citing Léopold Delisle, Littérature latine et histoire du moyen âge, Paris: Leroux, 1890, OCLC490034651, p. 17.
Louis John Paetow, A Guide to the Study of Medieval History for Students, Teachers, and Libraries, Berkeley: University of California, 1917, OCLC185267056, p. 150, citing Léopold Delisle, Littérature latine et histoire du moyen âge, Paris: Leroux, 1890, OCLC490034651, p. 17.