@misc{Balthasar_de_Porta_(_-około_1500)_Expositio,
 author={Balthasar de Porta ( -około 1500)},
 howpublished={online},
 publisher={Martin Landsberg},
 publisher={Stephan Gerhard},
 language={lat},
 type={starodruk},
 title={Expositio Misterioru[m] misse Christi passionem deuotissime figura[n]tium. metrice atq[ue] prosaice posita Et vetus modus rite celebra[n]di. cunctis celebrantibus. et Missam fructuose audire cupientibus. perq[ua]m vtilis [...]},
}