Newell, F. (2008). Why CRM Dosen't Work (1st.). Kogan Page.
Chicago Style aipamenaNewell, Frederick. Why CRM Dosen't Work. 1st. Kogan Page, 2008.
MLA aipamenaNewell, Frederick. Why CRM Dosen't Work. 1st. Kogan Page, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.