Hohenberg, J. (1971). Free press: The best cause. Columbia University Press.
Cita Chicago (17th ed.)Hohenberg, John. Free Press: The Best Cause. New York: Columbia University Press, 1971.
Cita MLA (9th ed.)Hohenberg, John. Free Press: The Best Cause. Columbia University Press, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.