REHFELD JOHN E. (1994). ALCHEMY OF A LEADER. JOHN WILEY AND SONS.
Lua i Stíl Chicago (17ú heag.)REHFELD JOHN E. ALCHEMY OF A LEADER. NEW YORK: JOHN WILEY AND SONS, 1994.
Lua MLA (9ú heag.)REHFELD JOHN E. ALCHEMY OF A LEADER. JOHN WILEY AND SONS, 1994.
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