Sengupta, S. (2005). Brand positioning strategies for competitive advantage 2nd ed.
Lua i Stíl Chicago (17ú heag.)Sengupta, Subroto. Brand Positioning Strategies for Competitive Advantage 2nd Ed. New Delhi, 2005.
Lua MLA (9ú heag.)Sengupta, Subroto. Brand Positioning Strategies for Competitive Advantage 2nd Ed. 2005.
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