(1992). Marketing Berkowitz, Kerin Et.al. Richard D.Irwin.
Chicago Style aipamenaMarketing Berkowitz, Kerin Et.al. Richard D.Irwin, 1992.
MLA aipamenaMarketing Berkowitz, Kerin Et.al. Richard D.Irwin, 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.