Dyfyniad APA

Bell,David E, & Keeney,Ralph L. (1977). Conflicting objectives in decisions. John Walley & Sons.

Dyfyniad Arddull Chicago

Bell,David E, and Keeney,Ralph L. Conflicting Objectives in Decisions. New York: John Walley & Sons, 1977.

Dyfyniad MLA

Bell,David E, and Keeney,Ralph L. Conflicting Objectives in Decisions. John Walley & Sons, 1977.

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