Verderber, R. F. (1985). The challenge of effective speaking (6th ed.). Wadsworth Pub. Co..
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Citación estilo Chicago
Verderber, Rudolph F. The Challenge of Effective Speaking. 6th ed. Belmont, Calif.: Wadsworth Pub. Co., 1985.
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Cita MLA
Verderber, Rudolph F. The Challenge of Effective Speaking. 6th ed. Wadsworth Pub. Co., 1985.
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