KOLB ROBERT W. (2008). ENCYCLOPEDIA OF BUSINESS ETHICS AND SOCIETY VOL.4. SAGE PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)KOLB ROBERT W. ENCYCLOPEDIA OF BUSINESS ETHICS AND SOCIETY VOL.4. LOS ANGELES: SAGE PUBLICATIONS, 2008.
Lua MLA (9ú heag.)KOLB ROBERT W. ENCYCLOPEDIA OF BUSINESS ETHICS AND SOCIETY VOL.4. SAGE PUBLICATIONS, 2008.
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