Peelen, e. (2022). Customer relationship management. Persson india education services.
Chicago Style aipamenaPeelen, ed. Customer Relationship Management. Noida: Persson india education services, 2022.
MLA aipamenaPeelen, ed. Customer Relationship Management. Persson india education services, 2022.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.