@misc{Boethius_Anicius_Manlius_Torquatus_Severinus_(około_475-524)_De,
 author={Boethius, Anicius Manlius Torquatus Severinus (około 475-524)},
 howpublished={online},
 publisher={Erhard Ratdolt},
 language={lat},
 type={inkunabuł},
 title={De institutione arithmetica},
}