Não informado. (1969). Science policy news. Science Policy Foundation.
Lua i Stíl Chicago (17ú heag.)Não informado. Science Policy News. London: Science Policy Foundation, 1969.
Lua MLA (8ú heag.)Não informado. Science Policy News. Science Policy Foundation, 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.