Hutt,Michael D & Others. (2014). B 2 B Marketing (11 th.).
Chicago Style aipamenaHutt,Michael D & Others. B 2 B Marketing. 11 th. Delhi, 2014.
MLA aipamenaHutt,Michael D & Others. B 2 B Marketing. 11 th. 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.