Kotler, P. (1980). Marketing management: Analysis planning and control (4th ed.). PHI.
Chicago ZitierstilKotler, Philip. Marketing Management: Analysis Planning and Control. 4th ed. New Delhi: PHI, 1980.
MLA ZitierstilKotler, Philip. Marketing Management: Analysis Planning and Control. 4th ed. PHI, 1980.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.