Ritus Ambrosian: Perbedaan antara revisi

*Antiphoner: "Antiphonarium Ambrosianum"; British Museum, Add. Manuscripts, 34,209; twelfth century; published by the Benedictines of Solesmes, with a complete facsimile and 200 pages of introduction by Dom Paul Cagin, in "Paléographie musicale", V ,VI.