Hucbald, Guido, and John on Music
MLA
Hucbald of Saint Amand, et al. Hucbald, Guido, and John On Music. New Haven: Yale University Press, 1978.
APA
Hucbald of Saint Amand, H. of Saint Amand, Guido d'Arezzo, G. d'Arezzo, Cotton, J., Babb, W., & Palisca, C. V. (1978). Hucbald, Guido, and John on Music. New Haven: Yale University Press.
Chicago
Hucbald of Saint Amand, Guido d'Arezzo, and John Cotton. Hucbald, Guido, and John On Music. Translated by Warren Babb. Edited by Claude V Palisca. New Haven: Yale University Press, 1978.