Terpstra, V. (1991). International marketing (5th ed.). The dryden press.
Chicago Style aipamenaTerpstra, Vern. International Marketing. 5th ed. Chicago: The dryden press, 1991.
MLA aipamenaTerpstra, Vern. International Marketing. 5th ed. The dryden press, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.