Dyfyniad APA

National Research Council (U.S.). Highway Research Board. (1954). Highway accidents and related factors: Presented at the Thirty-third Annual Meeting, January 12-15, 1954. Highway Research Board.

Dyfyniad Arddull Chicago

National Research Council (U.S.). Highway Research Board. Highway Accidents and Related Factors: Presented at the Thirty-third Annual Meeting, January 12-15, 1954. Washington: Highway Research Board, 1954.

Dyfyniad MLA

National Research Council (U.S.). Highway Research Board. Highway Accidents and Related Factors: Presented at the Thirty-third Annual Meeting, January 12-15, 1954. Highway Research Board, 1954.

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