Witzel, M. Tata: The Evolution of a Corporate Brand. Penguin.
Chicago Style aipamenaWitzel, Morgen. Tata: The Evolution of a Corporate Brand. Penguin.
MLA aipamenaWitzel, Morgen. Tata: The Evolution of a Corporate Brand. Penguin.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.