Die Melodien aus gedruckten Quellen bis 1680Joachim Stalmann, Karl-Günther Hartmann, Hans-Otto Korth, Jürgen Grimm, Robert A. Skeris · First published 1993Open the Tome
Musical imagery in the ecclesiastical writers of the first three centuriesRobert A. Skeris · First published 1976Open the Tome
