Marcus, B. W. (1992). Competing for clients in the nineties.
Chicago Style aipamenaMarcus, Bruce W. Competing for Clients in the Nineties. :, 1992.
MLA aipamenaMarcus, Bruce W. Competing for Clients in the Nineties. 1992.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.