KOTLER, P. (1983). Principles Of Marketing Philip Kotler. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)KOTLER, Philip. Principles Of Marketing Philip Kotler. Prentice Hall, 1983.
Lua MLA (8ú heag.)KOTLER, Philip. Principles Of Marketing Philip Kotler. Prentice Hall, 1983.
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