David, F. R. (2009). Strategic management: Concepts and cases (12th ed.). Pearson Education ; PHI Learning Pvt. Ltd..
Lua i Stíl Chicago (17ú heag.)David, Fred R. Strategic Management: Concepts and Cases. 12th ed. Upper Saddle River, N.J. : New Delhi: Pearson Education ; PHI Learning Pvt. Ltd., 2009.
Lua MLA (8ú heag.)David, Fred R. Strategic Management: Concepts and Cases. 12th ed. Pearson Education ; PHI Learning Pvt. Ltd., 2009.
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