Dyfyniad APA

Washington Post Writers Group. (1991). Messages: The Washington Post media companion. Allyn and Bacon.

Dyfyniad Arddull Chicago

Washington Post Writers Group. Messages: The Washington Post Media Companion. Boston: Allyn and Bacon, 1991.

Dyfyniad MLA

Washington Post Writers Group. Messages: The Washington Post Media Companion. Allyn and Bacon, 1991.

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