APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.