Kotler, P. (1991). Principles of marketing (5th.). Prentic Hall.
Chicago-čujuhus (17. p.)Kotler, Philip. Principles of Marketing. 5th. New Delhi: Prentic Hall, 1991.
MLA-čujuhus (9. p.)Kotler, Philip. Principles of Marketing. 5th. Prentic Hall, 1991.
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