La Trobe University - Library: Medieval Music Database - Annual cycle of feasts of liturgical chant, liturgical polyphony and secular music of the late middle ages.

Credo

anonymous

Cambridge: University Library, Additional 5963 (8), fol. 13v (1/1) (Cantus only).

GOMEZ, Maria del Carmen. 'Neue Quellen mit mehrstimmiger geistlicher Musik des 14. Jahrhunderts in Spanien', Acta Musicologica, L (1978): 208-216.