O magnum mysterium,
Motet for six-part chorus of mixed voices a cappella.
Practical performing edition by Rudolf Ewerhart.

APA Citation

Palestrina, G. Pierluigi da. (1961). O magnum mysterium: Motet for six-part chorus of mixed voices a cappella. Wiesbaden: Breitkopf & Hartel.

MLA Citation

Palestrina, Giovanni Pierluigi da, 1525?-1594. O Magnum Mysterium: Motet for Six-part Chorus of Mixed Voices a Cappella. Wiesbaden: Breitkopf & Hartel, 1961.

Warning: These citations may not always be complete (especially for serials).