@misc{Johannes_de_Friburgo_(1250–1314)_Summa,
 author={Johannes de Friburgo (1250–1314)},
 howpublished={online},
 publisher={Ioannes Bämler},
 language={lat},
 type={inkunabuł},
 title={Summa confessorum, Germ. Trad. Bertholdus O. P.},
}