@misc{Balzac_Honoré_de_(1799–1850)_La,
 author={Balzac, Honoré de, (1799–1850)},
 howpublished={online},
 publisher={Calmann Lévy},
 language={fre},
 type={powieści},
 title={La femme de trente ans},
 keywords={literatura francuska 19w.},
}