Osborn, M., & Osborn, S. (1994). Public Speaking (3rd ed.). Houghton Mifflin.
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Dyfyniad Arddull Chicago
Osborn, Michael, and Suzanne Osborn. Public Speaking. 3rd ed. Boston: Houghton Mifflin, 1994.
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Dyfyniad MLA
Osborn, Michael, and Suzanne Osborn. Public Speaking. 3rd ed. Houghton Mifflin, 1994.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.