Dyfyniad APA

(1985). Providing visibility and visual guidance to the road user. Transportation Research Board, National Research Council.

Dyfyniad Arddull Chicago

Providing Visibility and Visual Guidance to the Road User. Washington, D.C: Transportation Research Board, National Research Council, 1985.

Dyfyniad MLA

Providing Visibility and Visual Guidance to the Road User. Transportation Research Board, National Research Council, 1985.

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