Kotler, P. (1983). Principles of marketing (2nd ed.). Prentice-Hall.
Chicago-viite (17. p.)Kotler, Philip. Principles of Marketing. 2nd ed. London: Prentice-Hall, 1983.
MLA-viite (9. p.)Kotler, Philip. Principles of Marketing. 2nd ed. Prentice-Hall, 1983.
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