Dyfyniad APA

American Association of State Highway and Transportation Officials, United States. Federal Highway Administration, & Albrecht, P. (1989). Guidelines for the use of weathering steel in bridges. Transportation Research Board, National Research Council.

Dyfyniad Arddull Chicago

American Association of State Highway and Transportation Officials, United States. Federal Highway Administration, and Pedro Albrecht. Guidelines for the Use of Weathering Steel in Bridges. Washington, D.C: Transportation Research Board, National Research Council, 1989.

Dyfyniad MLA

American Association of State Highway and Transportation Officials, et al. Guidelines for the Use of Weathering Steel in Bridges. Transportation Research Board, National Research Council, 1989.

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