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Lua i Stíl Chicago (17ú heag.)HARTMAN AMIR. RUTHLESS EXECUTION: WHAT BUSINESS LEADERS DO..WALL. DELHI: PEARSON EDUCATION, 2004.
Lua MLA (9ú heag.)HARTMAN AMIR. RUTHLESS EXECUTION: WHAT BUSINESS LEADERS DO..WALL. PEARSON EDUCATION, 2004.
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