Não informado. (2001). Annual Report. Government Printing Office.
Chicago-referens (17:e uppl.)Não informado. Annual Report. Singapore: Government Printing Office, 2001.
MLA-referens (8:e uppl.)Não informado. Annual Report. Government Printing Office, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.