Dyfyniad APA

Metals Industry Research and Development Center. (1974). Metalworking directory. [s.n.].

Dyfyniad Arddull Chicago

Metals Industry Research and Development Center. Metalworking Directory. [Pasig, Rizal: [s.n.], 1974.

Dyfyniad MLA

Metals Industry Research and Development Center. Metalworking Directory. [s.n.], 1974.

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