Clifford, L. (1975). National scientific and technical information coordinating organisations: A comparative survey. Institute for Industrial Research and Standards.
Lua i Stíl Chicago (17ú heag.)Clifford, Liam. National Scientific and Technical Information Coordinating Organisations: A Comparative Survey. [Dublin]: Institute for Industrial Research and Standards, 1975.
Lua MLA (9ú heag.)Clifford, Liam. National Scientific and Technical Information Coordinating Organisations: A Comparative Survey. Institute for Industrial Research and Standards, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.