Tohutoro APA (7th ed.)

(1979). Communication concepts and skills / Robert Hopper and Jack L. Whitehead, Jr.

Tohutoru Kātū Chicago (17th ed.)

Communication Concepts and Skills / Robert Hopper and Jack L. Whitehead, Jr. 1979.

Tohutoro MLA (9th ed.)

Communication Concepts and Skills / Robert Hopper and Jack L. Whitehead, Jr. 1979.

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