National Research Council (U.S.). Transportation Research Board. (1988). Research problem statements on traffic control devices. Transportation Research Board, National Research Council.
Cytowanie według stylu Chicago (wyd. 17)National Research Council (U.S.). Transportation Research Board. Research Problem Statements on Traffic Control Devices. Washington, D.C: Transportation Research Board, National Research Council, 1988.
Cytowanie według stylu MLA (wyd. 9)National Research Council (U.S.). Transportation Research Board. Research Problem Statements on Traffic Control Devices. Transportation Research Board, National Research Council, 1988.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..