Dyfyniad APA

United States Conference on Prestressed Concrete. Proceedings. [s.n.].

Dyfyniad Arddull Chicago

United States Conference on Prestressed Concrete. Proceedings. [United States]: [s.n.].

Dyfyniad MLA

United States Conference on Prestressed Concrete. Proceedings. [s.n.].

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