@misc{Jędrowiak_Anna_Celtis_2019,
 author={Jędrowiak, Anna and Nowak, Kinga},
 copyright={Creative Commons Attribution BY-SA 4.0 license},
 howpublished={online},
 year={2019},
 language={mul},
 type={Image},
 title={Celtis occidentalis L.},
 keywords={woody plant, deciduous tree, North American species},
}