Carnegie, D. (1956). How to develop self-confidence and influence people by public speaking. Cedar Books.
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Dyfyniad Arddull Chicago
Carnegie, Dale. How to Develop Self-confidence and Influence People by Public Speaking. London: Cedar Books, 1956.
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Dyfyniad MLA
Carnegie, Dale. How to Develop Self-confidence and Influence People by Public Speaking. Cedar Books, 1956.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.