Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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