@misc{Heyck_Eduard_(1862-1941)_Florenz,
 author={Heyck, Eduard (1862-1941)},
 howpublished={online},
 publisher={Velhagen & Klasing},
 language={ger},
 title={Florenz und die Mediceer},
 type={książka},
 keywords={Medici (ród)},
}