AAKER DAVID A. (1984). DEVELOPING BUSINESS STRATEGIES. JOHN WILEY AND SONS.
Lua i Stíl Chicago (17ú heag.)AAKER DAVID A. DEVELOPING BUSINESS STRATEGIES. NEW YORK: JOHN WILEY AND SONS, 1984.
Lua MLA (9ú heag.)AAKER DAVID A. DEVELOPING BUSINESS STRATEGIES. JOHN WILEY AND SONS, 1984.
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