5.2 : When am I not required to reference my information sources?

Well-known fact: the start and end date of World War I (1914–1918); the name of the current president of the United States of America (Donald Trump).

A lesser-known fact: the start and end date of the Third Punic War (149–146 BC); the name of the Madagascar Senate president who served in between 2008–2009 (Yvan Randriasandratriniony).

Tip! When in doubt, use a source citation.