KOTLER, P. (2001). Principles of marketing Philip Kotler. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)KOTLER, Philip. Principles of Marketing Philip Kotler. Prentice-Hall, 2001.
Lua MLA (8ú heag.)KOTLER, Philip. Principles of Marketing Philip Kotler. Prentice-Hall, 2001.
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