(1985). Highway Capacity Manual Special Report 209. National Research Council.
Lua i Stíl Chicago (17ú heag.)Highway Capacity Manual Special Report 209. National Research Council, 1985.
Lua MLA (8ú heag.)Highway Capacity Manual Special Report 209. National Research Council, 1985.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.