Ury, W. (1991). Getting past no: Negotiating with difficult people. Bantam Books.
Citace podle Chicago (17th ed.)Ury, William. Getting Past No: Negotiating with Difficult People. New York: Bantam Books, 1991.
Citace podle MLA (9th ed.)Ury, William. Getting Past No: Negotiating with Difficult People. Bantam Books, 1991.
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