National Research Council (U.S.). Highway Research Board. (1973). Environmental considerations in planning, design, and construction. Highway Research Board.
Lua i Stíl Chicago (17ú heag.)National Research Council (U.S.). Highway Research Board. Environmental Considerations in Planning, Design, and Construction. Washington: Highway Research Board, 1973.
Lua MLA (9ú heag.)National Research Council (U.S.). Highway Research Board. Environmental Considerations in Planning, Design, and Construction. Highway Research Board, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.