Não informado. (1972). Science policy. Science Policy Foundation.
Lua i Stíl Chicago (17ú heag.)Não informado. Science Policy. London: Science Policy Foundation, 1972.
Lua MLA (8ú heag.)Não informado. Science Policy. Science Policy Foundation, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.