STERN CARL W. (2006). BOSTON CONSULTING GROUP ON STRATEGY. JOHN WILEY & SONS, INC.
Lua i Stíl Chicago (17ú heag.)STERN CARL W. BOSTON CONSULTING GROUP ON STRATEGY. NEW JERSEY: JOHN WILEY & SONS, INC, 2006.
Lua MLA (9ú heag.)STERN CARL W. BOSTON CONSULTING GROUP ON STRATEGY. JOHN WILEY & SONS, INC, 2006.
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