RAIFFA HOWARD. (1982). ART AND SCIENCE OF NEGOTIATION. HOWARD COLLEGE.
Lua i Stíl Chicago (17ú heag.)RAIFFA HOWARD. ART AND SCIENCE OF NEGOTIATION. USA: HOWARD COLLEGE, 1982.
Lua MLA (9ú heag.)RAIFFA HOWARD. ART AND SCIENCE OF NEGOTIATION. HOWARD COLLEGE, 1982.
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