Hasling, J. (1971). The message the speaker the audience. McGraw - hill.
Cita Chicago (17th ed.)Hasling, John. The Message the Speaker the Audience. New York: McGraw - hill, 1971.
Cita MLA (9th ed.)Hasling, John. The Message the Speaker the Audience. McGraw - hill, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.