Blomquist, r. (2006). Customer relationship management. [s.Infinity.
Chicago Style aipamenaBlomquist, raif. Customer Relationship Management. Delhi: [s.Infinity, 2006.
MLA aipamenaBlomquist, raif. Customer Relationship Management. [s.Infinity, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.