Sengupta, S. (1994). Brand Positioning: Strategies for competitive advantage. Tata McGraw Hill pub.co.ltd.
Lua i Stíl Chicago (17ú heag.)Sengupta, Subroto. Brand Positioning: Strategies for Competitive Advantage. New delhi: Tata McGraw Hill pub.co.ltd, 1994.
Lua MLA (9ú heag.)Sengupta, Subroto. Brand Positioning: Strategies for Competitive Advantage. Tata McGraw Hill pub.co.ltd, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.