Belch, G. E., & Belch, M. A. (1990). Introduction to advertising and promotion management. Irwin.
Chicago Style aipamenaBelch, George E., and Michael A. Belch. Introduction to Advertising and Promotion Management. Homewood, Ill.: Irwin, 1990.
MLA aipamenaBelch, George E., and Michael A. Belch. Introduction to Advertising and Promotion Management. Irwin, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.