Morlan, D. B., & Tuttle, G. E. (1976). An introduction to effective oral communication. The Bobbs-Merrill Co..
Chicago-čujuhus (17. p.)Morlan, Don B., juo George E. Tuttle. An Introduction to Effective Oral Communication. Indianapolis: The Bobbs-Merrill Co., 1976.
MLA-čujuhus (9. p.)Morlan, Don B., juo George E. Tuttle. An Introduction to Effective Oral Communication. The Bobbs-Merrill Co., 1976.
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