Sengupta, S. Brand Positioning: Strategies for Competitive Advantage (2nd.). McGraw Hill.
Chicago-viite (17. p.)Sengupta, Subroto. Brand Positioning: Strategies for Competitive Advantage. 2nd. McGraw Hill.
MLA-viite (9. p.)Sengupta, Subroto. Brand Positioning: Strategies for Competitive Advantage. 2nd. McGraw Hill.
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