Dyfyniad APA

Morphy H. Frederic. (1991). Interfaces. Institute of management service.

Dyfyniad Arddull Chicago

Morphy H. Frederic. Interfaces. America: Institute of management service, 1991.

Dyfyniad MLA

Morphy H. Frederic. Interfaces. Institute of management service, 1991.

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