HILTROP J M. (1997). ESSENCE OF NEGOTIATION. PRENTICE -HALL INTERNATIONAL; INC.
Chicago-čujuhus (17. p.)HILTROP J M. ESSENCE OF NEGOTIATION. NEW JERSEY;USA: PRENTICE -HALL INTERNATIONAL; INC, 1997.
MLA-čujuhus (9. p.)HILTROP J M. ESSENCE OF NEGOTIATION. PRENTICE -HALL INTERNATIONAL; INC, 1997.
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