Hildegard of Bingen's Ordo Virtutum
| Author(s) | Title | Reference | |
|---|---|---|---|
| Malcolm M. Brennan | European Drama of the Early Middle Ages, by Richard Axton | 45/1, p. 126 | |
| Laurence Eldredge | Nine Medieval Latin Plays, Cambridge Medieval Classics 1, by Peter Dronke | 64/2, p. 304 |