This explainer video shows that you should use good sources of information when editing an article on wikipedia.
<a href="//commons.wikimedia.org/wiki/User:Elisabeth_Mandl_(WMDE)" title="User:Elisabeth Mandl (WMDE)">Elisabeth Mandl</a>, <a href="//commons.wikimedia.org/wiki/User:Denis_Schroeder_(WMDE)" title="User:Denis Schroeder (WMDE)">Denis Schröder</a>, Theresa Sieder, Ilya Kompasov
CC BY-SA 4.0
Wikimedia Deutschland und Simpleshow Foundation