Witzel, M. (2010). TATA: The evolution of a corporate brand. Portfolio.
Chicago Style aipamenaWitzel, Morgen. TATA: The Evolution of a Corporate Brand. New Delhi: Portfolio, 2010.
MLA aipamenaWitzel, Morgen. TATA: The Evolution of a Corporate Brand. Portfolio, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.