Norberg, D., & Ziolkowski, J. M. (2004). An introduction to the study of medieval Latin versification. Catholic University of America Press.

Norberg, Dag, and Jan M. Ziolkowski. An Introduction to the Study of Medieval Latin Versification. Washington, D.C.: Catholic University of America Press, 2004.

Norberg, Dag, and Jan M. Ziolkowski. An Introduction to the Study of Medieval Latin Versification. Catholic University of America Press, 2004.