DAVID, F. R. (1999). Strategic Management Concepts & Cases Fred R. David. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)DAVID, Fred R. Strategic Management Concepts & Cases Fred R. David. Prentice Hall, 1999.
Lua MLA (8ú heag.)DAVID, Fred R. Strategic Management Concepts & Cases Fred R. David. Prentice Hall, 1999.
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