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Lua i Stíl Chicago (17ú heag.)YIP, George S. Total Global Strategy Managing For Worldwide Competitive Advantage George S. Yip. Prentice-Hall International,In, 1995.
Lua MLA (8ú heag.)YIP, George S. Total Global Strategy Managing For Worldwide Competitive Advantage George S. Yip. Prentice-Hall International,In, 1995.
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