Dyfyniad APA

(1977). The Delphi Method: Techniques and applications. Addison-wesley.

Dyfyniad Arddull Chicago

The Delphi Method: Techniques and Applications. London: Addison-wesley, 1977.

Dyfyniad MLA

The Delphi Method: Techniques and Applications. Addison-wesley, 1977.

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