Ury, W. (2008). The power of a positive no: How to say no and still get to yes ; [save the deal, save the relationship - and still say no]. Bantam Books.
Citace podle Chicago (17th ed.)Ury, William. The Power of a Positive No: How to Say No and Still Get to Yes ; [save the Deal, Save the Relationship - and Still Say No]. New York: Bantam Books, 2008.
Citace podle MLA (9th ed.)Ury, William. The Power of a Positive No: How to Say No and Still Get to Yes ; [save the Deal, Save the Relationship - and Still Say No]. Bantam Books, 2008.
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