Cita APA (7th ed.)
Crowley, D. J. (1982). Understanding Communication. Gordon & Breach.
Cita Chicago (17th ed.)
Crowley, D J. Understanding Communication. New York: Gordon & Breach, 1982.
Cita MLA (9th ed.)
Crowley, D J. Understanding Communication. Gordon & Breach, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.