SPARKS DONALD B. (1982). DYNAMICS OF EFFECTIVE NEGOTIATION. GULF PUBLISHING CO.
Čikaški stil citiranja (17. izdanje)SPARKS DONALD B. DYNAMICS OF EFFECTIVE NEGOTIATION. LONDON: GULF PUBLISHING CO, 1982.
MLA način citiranja (9. izdanje)SPARKS DONALD B. DYNAMICS OF EFFECTIVE NEGOTIATION. GULF PUBLISHING CO, 1982.
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