(2005). Business periodicals collection. Ipswich, MA: Ebsco.
Chicago Style aipamenaBusiness Periodicals Collection. Ipswich, MA: Ebsco, 2005.
MLA aipamenaBusiness Periodicals Collection. Ipswich, MA: Ebsco, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.