Cita APA (7th ed.)
Sola Pool, I. d., & Frey, F. W. (1973). Handbook of communication.
Cita Chicago (17th ed.)
Sola Pool, Ithiel de, i Frederick W. Frey. Handbook of Communication. 1973.
Cita MLA (9th ed.)
Sola Pool, Ithiel de, i Frederick W. Frey. Handbook of Communication. 1973.
Atenció: Aquestes cites poden no estar 100% correctes.