National Research Council (U.S.). Highway Research Board. (1973). Education in transportation systems planning: 5 reports prepared for the 52nd annual meeting. National Academy of Science - National Research Council.
Lua i Stíl Chicago (17ú heag.)National Research Council (U.S.). Highway Research Board. Education in Transportation Systems Planning: 5 Reports Prepared for the 52nd Annual Meeting. Washington, D.C: National Academy of Science - National Research Council, 1973.
Lua MLA (9ú heag.)National Research Council (U.S.). Highway Research Board. Education in Transportation Systems Planning: 5 Reports Prepared for the 52nd Annual Meeting. National Academy of Science - National Research Council, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.