Klausner, David N, Timothy J McGee, and A.G. Rigg (eds.) 1996. Singing Early Music. The Pronunciation of the European Languages in the Late Middle Ages and Renaissance.  Bloomington and Indianapolis.

Harrison, Frank Llewellyn, A.G. Rigg, and Elizabeth Rutson (eds.) 1968. Motets of French Provenance. Polyphonic Music of the Fourteenth Century.  Monaco: Éditions de l'Oiseau-Lyre.