@misc{Haeckel_Ernst_(1834–1919)_Die_[1913],
 author={Haeckel, Ernst (1834–1919)},
 editor={Breitenbach, Wilhelm (1856–1937). Współaut.},
 copyright={Public Domain},
 address={Berlin-Ch.},
 howpublished={online},
 year={[1913]},
 publisher={Vita Deutsches verlagshaus},
 language={ger},
 title={Die Natur als Künstlerin},
 type={Text},
 URL={http://www.rcin.org.pl/Content/3440/PDF/WA488_6468_894_haeckel-Die_Natur_als_Kunstierin.pdf},
 keywords={Natural history, Nature},
}