@misc{Czartoryski_Adam_Jerzy_(1770-1861)_Lettre,
 author={Czartoryski, Adam Jerzy (1770-1861)},
 address={Paris},
 howpublished={online},
 publisher={Imprimerie de J. Claye, Rue Saint Benoit 7},
 type={broszura},
 title={Lettre du prince Adam Czartoryski aux Polonais},
}