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}

}