Dyfyniad APA

National Research Council (U.S.). Transportation Research Board. (1988). Transportation trends and current research activities: A summary of TRB's field visit program. Transportation Research Board, National Research Council.

Dyfyniad Arddull Chicago

National Research Council (U.S.). Transportation Research Board. Transportation Trends and Current Research Activities: A Summary of TRB's Field Visit Program. Washington, D.C: Transportation Research Board, National Research Council, 1988.

Dyfyniad MLA

National Research Council (U.S.). Transportation Research Board. Transportation Trends and Current Research Activities: A Summary of TRB's Field Visit Program. Transportation Research Board, National Research Council, 1988.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.