@misc{Valturius_Robertus_De_1534,
 author={Valturius Robertus},
 address={Parisiis},
 year={1534},
 publisher={apud Christianum Wechelum},
 language={lat},
 title={De re militari...},
 type={stary druk},
 keywords={wojsko ; technika wojskowa},
}