Não informado. (1966). Summary of progress. National Cooperative Highway Research Program.
Lua i Stíl Chicago (17ú heag.)Não informado. Summary of Progress. Washington: National Cooperative Highway Research Program, 1966.
Lua MLA (8ú heag.)Não informado. Summary of Progress. National Cooperative Highway Research Program, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.