@misc{_Propositio,
 howpublished={online},
 language={lat},
 title={Propositio Legati Serenissimi Ducis Neoburgici : Serenissimæ Reipub Poloniæ, Magniq[ue] Ducatus Lithu. Proceres & Ordines.},
 type={stary druk},
}