Lucas, S. (1986). The art of public speaking (2nd ed.). Random House.
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Chicago-čujuhus (17. p.)
Lucas, Stephen. The Art of Public Speaking. 2nd ed. New York: Random House, 1986.
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MLA-čujuhus (9. p.)
Lucas, Stephen. The Art of Public Speaking. 2nd ed. Random House, 1986.
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