David,Fred R. (1999). Strategic management: Concepts (7th ed.). Prentice-Hall.
Παραπομπή Chicago StyleDavid,Fred R. Strategic Management: Concepts. 7th ed. New Jersey: Prentice-Hall, 1999.
Παραπομπή MLADavid,Fred R. Strategic Management: Concepts. 7th ed. Prentice-Hall, 1999.
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