Source: PL-PŁsem MsEPl 15 Antyfonarz z Płocka, pars de sanctisFolio: 124rSequence: 9Feast: Exaltatio CrucisOffice: TGenre: RCantus ID: 601046Mode: rFull text: Hoc signum crucis erit in caeloNotes: CANTUS add. alleluia alleluia