Dyfyniad APA

National Research Council (U.S.). Transportation Research Board. (1989). Safety factors related to high-speed rail passenger systems. Transportation Research Board, National Research Council.

Dyfyniad Arddull Chicago

National Research Council (U.S.). Transportation Research Board. Safety Factors Related to High-speed Rail Passenger Systems. Washington, D.C: Transportation Research Board, National Research Council, 1989.

Dyfyniad MLA

National Research Council (U.S.). Transportation Research Board. Safety Factors Related to High-speed Rail Passenger Systems. Transportation Research Board, National Research Council, 1989.

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