CAMPBELL ANDREW. (1997). CORE COMPETENCY - BASED STRATEGY. INTERNATIONAL THOMSON BUSINESS PRESS.
Lua i Stíl Chicago (17ú heag.)CAMPBELL ANDREW. CORE COMPETENCY - BASED STRATEGY. LONDON: INTERNATIONAL THOMSON BUSINESS PRESS, 1997.
Lua MLA (9ú heag.)CAMPBELL ANDREW. CORE COMPETENCY - BASED STRATEGY. INTERNATIONAL THOMSON BUSINESS PRESS, 1997.
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