GOULD, J. S. (1986). The Negotiator's problem solver. John Wiley and Sons.
Chicago-čujuhus (17. p.)GOULD, Joe Sutherland. The Negotiator's Problem Solver. New York: John Wiley and Sons, 1986.
MLA-čujuhus (9. p.)GOULD, Joe Sutherland. The Negotiator's Problem Solver. John Wiley and Sons, 1986.
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