(1965). Thirty-five conductus, for two and three voices. Yale University.
Dyfyniad Arddull ChicagoThirty-five Conductus, for Two and Three Voices. [New Haven]: Yale University, 1965.
Dyfyniad MLAThirty-five Conductus, for Two and Three Voices. Yale University, 1965.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.