Kotler, P. (1997). Marketing management (9th ed.). Prentice-Hall of India.
Chicago ZitierstilKotler, Philip. Marketing Management. 9th ed. New Delhi: Prentice-Hall of India, 1997.
MLA ZitierstilKotler, Philip. Marketing Management. 9th ed. Prentice-Hall of India, 1997.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.