Tohutoro APA (7th ed.)
Walker, G. (2007). Modern competitive strategy (2nd ed.). McGraw-Hill.
Tohutoru Kātū Chicago (17th ed.)
Walker, Gordon. Modern Competitive Strategy. 2nd ed. Boston: McGraw-Hill, 2007.
Tohutoro MLA (9th ed.)
Walker, Gordon. Modern Competitive Strategy. 2nd ed. McGraw-Hill, 2007.
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