@misc{Belethus_Ioannes_(_–1182)_Summa,
 author={Belethus, Ioannes ( –1182) and http://viaf.org/viaf/24637109 and Henricus de Hassia (c. 1325 – 1397) and http://viaf.org/viaf/207244871},
 howpublished={online},
 language={lat},
 title={Summa de ecclesiasticis officiis},
 title={Auctoritates sanctorum patrum et doctorum},
 title={Carmen invectivum in schisma sui temporis},
 type={text},
 keywords={14 w., teologia, patrystyka},
}