Williams Frederick. (1984). The new Communication (2nd ed.). Wadsworth.
Cita Chicago (17th ed.)Williams Frederick. The New Communication. 2nd ed. California: Wadsworth, 1984.
Cita MLA (9th ed.)Williams Frederick. The New Communication. 2nd ed. Wadsworth, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.