Cita APA (7th ed.)
Hasling, J. (1988). The message the speaker the audience (4th ed.). McGraw - hill.
Cita Chicago (17th ed.)
Hasling, John. The Message the Speaker the Audience. 4th ed. New York: McGraw - hill, 1988.
Cita MLA (9th ed.)
Hasling, John. The Message the Speaker the Audience. 4th ed. McGraw - hill, 1988.
Atenció: Aquestes cites poden no estar 100% correctes.