Tractatus de tonis

Author
Petrus de Cruce Ambianensis
TML ID
PETTRA
Century
Source

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), 1:282–92.