POPE BENEDICT XVI
UNIVERSAE ECCLESIAE. INSTRUCTION ON THE APPLICATION OF THE APOSTOLIC LETTER SUMMORUM PONTIFICUM OF HIS HOLINESS BENEDICT XVI GIVEN MOTU PROPRIO (April 30, 2011)
Ecclesiae Unitatem (July 2, 2009)
Summorum Pontificum (July 7, 2007)
Letter of Pope Benedict XVI to Bishops (accompanying Summorum Pontificum)




