Frederick H. Howard. (1993). Global Communication &International Relations. Wads Worth.
Cita Chicago (17th ed.)Frederick H. Howard. Global Communication &International Relations. California: Wads Worth, 1993.
Cita MLA (9th ed.)Frederick H. Howard. Global Communication &International Relations. Wads Worth, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.