APA (7th ed.) Zitazioa

Frederick H. Howard. (1993). Global Communication &International Relations. Wads Worth.

Chicago Style (17th ed.) Zitazioa

Frederick H. Howard. Global Communication &International Relations. California: Wads Worth, 1993.

MLA (9th ed.) Zitazioa

Frederick H. Howard. Global Communication &International Relations. Wads Worth, 1993.