Não informado. (2009). Science, Technology and Innovation. British Library, Science Reference and Information Service.
Chicago-referens (17:e uppl.)Não informado. Science, Technology and Innovation. London: British Library, Science Reference and Information Service, 2009.
MLA-referens (8:e uppl.)Não informado. Science, Technology and Innovation. British Library, Science Reference and Information Service, 2009.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.