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

Gloria

anonymous

London: British Library, Additional 40011B (Fountains fragments), fol. 10 (3/1).

The Fountains Fragments, facsimile edition by Margaret Bent, Clarabricken: Boethius Press, 1987, plate 15.