Clark, K. (1968). International communications, the American attitude. AMS Press.
Cita Chicago (17th ed.)Clark, Keith. International Communications, the American Attitude. New York: AMS Press, 1968.
Cita MLA (9th ed.)Clark, Keith. International Communications, the American Attitude. AMS Press, 1968.
Atenció: Aquestes cites poden no estar 100% correctes.