Dyfyniad APA

(1994). Federation Internationale De La Precontrainte Fip. Structural Engineers Trading Organisation.

Dyfyniad Arddull Chicago

Federation Internationale De La Precontrainte Fip. Structural Engineers Trading Organisation, 1994.

Dyfyniad MLA

Federation Internationale De La Precontrainte Fip. Structural Engineers Trading Organisation, 1994.

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