Nierenberg, G. I. (1974). The art of negotiating: Psychological strategies for gaining advantagous bargains. New York: Cornerstone Library.
Chicago-tyylinen lähdeviittausNierenberg, Gerard I. The Art of Negotiating: Psychological Strategies for Gaining Advantagous Bargains. New York: Cornerstone Library, 1974.
MLA-viiteNierenberg, Gerard I. The Art of Negotiating: Psychological Strategies for Gaining Advantagous Bargains. New York: Cornerstone Library, 1974.
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