United States. Bureau of the Public Debt & United States. National Archives and Records Service. (1965). Records of the Bureau of the Public Debt. The National Archives and Records Service.
Chicago-referens (17:e uppl.)United States. Bureau of the Public Debt och United States. National Archives and Records Service. Records of the Bureau of the Public Debt. Washington, D.C.: The National Archives and Records Service, 1965.
MLA-referens (8:e uppl.)United States. Bureau of the Public Debt och United States. National Archives and Records Service. Records of the Bureau of the Public Debt. The National Archives and Records Service, 1965.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.