Kotler, P. (1989). Marketing management/6e (6th ed.). Prentice Hall Of India pvt. ltd.
Chicago Style aipamenaKotler, P. Marketing Management/6e. 6th ed. New Delhi: Prentice Hall Of India pvt. ltd, 1989.
MLA aipamenaKotler, P. Marketing Management/6e. 6th ed. Prentice Hall Of India pvt. ltd, 1989.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.