@misc{Knackfuss_Hermann_(1848-1915)_Tizian,
 author={Knackfuss, Hermann (1848-1915)},
 address={Bielefeld},
 address={Leipzig},
 howpublished={online},
 publisher={Verlag von Velhagen und Klasing},
 language={ger},
 type={książka},
 title={Tizian},
 keywords={Tiziano Vecellio (około 1488-1576)},
}