@misc{Ecclesia_Catholica._Sacra_Rituum_Congregatio_Die,
 author={Ecclesia Catholica. Sacra Rituum Congregatio},
 howpublished={online},
 language={lat},
 type={starodruk},
 title={Die V. Maii. In Festo B. Pii Qvinti Summi Pontificis. Semidvplex : [officium]},
}