APA aipamena

Gupta, S. (2008). Managing customers as investments. Pearson Power.

Chicago Style aipamena

Gupta, Sunil. Managing Customers as Investments. New Delhi: Pearson Power, 2008.

MLA aipamena

Gupta, Sunil. Managing Customers as Investments. Pearson Power, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.