Não informado. (2009). Science, Technology and Innovation. British Library, Science Reference and Information Service.
Lua i Stíl Chicago (17ú heag.)Não informado. Science, Technology and Innovation. London: British Library, Science Reference and Information Service, 2009.
Lua MLA (8ú heag.)Não informado. Science, Technology and Innovation. British Library, Science Reference and Information Service, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.