APA aipamena

Lowenstein, M. W. (1998). Customer Retention. Deep And Deep.

Chicago Style aipamena

Lowenstein, Michael. W. Customer Retention. Delhi: Deep And Deep, 1998.

MLA aipamena

Lowenstein, Michael. W. Customer Retention. Deep And Deep, 1998.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.