Source: PL-PŁsem MsEPl 15 Antyfonarz z Płocka, pars de sanctisFolio: 131rSequence: 1Feast: MichaelisOffice: LGenre: APosition: 3Cantus ID: 001474Mode: 8Differentia: G1Rubrics: Add. posteriori manu: tertiaFull text: Archangele Michael constitui te principem super omnes animas suscipiendas