APA aipamena

Kotler, P. (1994). Learning guide ; Principles of marketing (6th ed.). Prentice Hall.

Chicago Style aipamena

Kotler, Philip. Learning Guide ; Principles of Marketing. 6th ed. New Jersey, New York: Prentice Hall, 1994.

MLA aipamena

Kotler, Philip. Learning Guide ; Principles of Marketing. 6th ed. Prentice Hall, 1994.