Bibliothek

@online{Wikipedia2019Kopernikus,
title = {Nikolaus Kopernikus},
author = {Wikipedianer},
url = {https://de.wikipedia.org/w/index.php?title=Nikolaus_Kopernikus&oldid=184010871},
year = {2018},
date = {2018-12-25},
urldate = {2019-02-16},
organization = {Wikipedia},
keywords = {A, Astronomie, Nikolaus Kopernikus},
pubstate = {published},
tppubtype = {online}
}

@online{Klexikon2019Kopernikus,
title = {Nikolaus Kopernikus},
author = {Klexikonianer},
url = {https://klexikon.zum.de/index.php?title=Nikolaus_Kopernikus&oldid=83283},
year = {2018},
date = {2018-10-28},
urldate = {2019-02-16},
keywords = {A, Astronomie, Nikolaus Kopernikus},
pubstate = {published},
tppubtype = {online}
}