Sylvester, K. (2016). Negotiating in the Leadership Zone. ELSEVIER.
Lua i Stíl Chicago (17ú heag.)Sylvester, Ken. Negotiating in the Leadership Zone. ELSEVIER, 2016.
Lua MLA (8ú heag.)Sylvester, Ken. Negotiating in the Leadership Zone. ELSEVIER, 2016.
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