KRASS PETER. (2000). BOOK OF MANAGEMENT WISDOM. JOHN WILEY AND SONS.
Lua i Stíl Chicago (17ú heag.)KRASS PETER. BOOK OF MANAGEMENT WISDOM. NEW YORK: JOHN WILEY AND SONS, 2000.
Lua MLA (9ú heag.)KRASS PETER. BOOK OF MANAGEMENT WISDOM. JOHN WILEY AND SONS, 2000.
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