GOOLD MICHAEL. (1994). CORPORATE-LEVEL STRATEGY. JOHN WILEY AND SONS.
Lua i Stíl Chicago (17ú heag.)GOOLD MICHAEL. CORPORATE-LEVEL STRATEGY. NEW YORK: JOHN WILEY AND SONS, 1994.
Lua MLA (9ú heag.)GOOLD MICHAEL. CORPORATE-LEVEL STRATEGY. JOHN WILEY AND SONS, 1994.
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