Note: Scriptorum de musica medii aevi nova series a Gerbertina altera, 4 vols., ed. Edmond de Coussemaker (Paris: Durand, 1864-76; reprint ed., Hildesheim: Olms, 1963), 3:193-99. Anche in: Jan Herlinger, Greek and Latin Music Theory, vol. 1 (Lincoln: University of Nebraska Press, 1984), 26-94.