National Flag Foundation. The standard bearer: A National Flag Foundation publication. National Flag Foundation.
Chicago-referens (17:e uppl.)National Flag Foundation. The Standard Bearer: A National Flag Foundation Publication. Pittsburgh, PA: National Flag Foundation.
MLA-referens (8:e uppl.)National Flag Foundation. The Standard Bearer: A National Flag Foundation Publication. National Flag Foundation.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.