Kotler, P. (1989). Marketing Management/6e (6th ed.). Prentice Hall of India pvt. ltd.
Chicago Stili AlıntıKotler, P. Marketing Management/6e. 6th ed. New Delhi: Prentice Hall of India pvt. ltd, 1989.
MLA AlıntıKotler, P. Marketing Management/6e. 6th ed. Prentice Hall of India pvt. ltd, 1989.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..