National Research Council (U.S.). Transportation Research Board. (1991). Visibility, rail-highway grade crossings, and highway improvement evaluation. Transportation Research Board, National Research Council.
Citace podle Chicago (17th ed.)National Research Council (U.S.). Transportation Research Board. Visibility, Rail-highway Grade Crossings, and Highway Improvement Evaluation. Washington, D.C: Transportation Research Board, National Research Council, 1991.
Citace podle MLA (9th ed.)National Research Council (U.S.). Transportation Research Board. Visibility, Rail-highway Grade Crossings, and Highway Improvement Evaluation. Transportation Research Board, National Research Council, 1991.
Upozornění: Tyto citace jsou generovány automaticky. Nemusí být zcela správně podle citačních pravidel..