Cravens, D. W. (1997). Strategic marketing (5th ed.). Irwin.
Chicago Style aipamenaCravens, David W. Strategic Marketing. 5th ed. Chicago ; Boston: Irwin, 1997.
MLA aipamenaCravens, David W. Strategic Marketing. 5th ed. Irwin, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.