Não informado. (2001). Special report. Department of Scientific and Industrial Research.
Chicago-referens (17:e uppl.)Não informado. Special Report. London: Department of Scientific and Industrial Research, 2001.
MLA-referens (8:e uppl.)Não informado. Special Report. Department of Scientific and Industrial Research, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.