PETER, J. P. (2009). Marketing management: Knowledge and skill ninth edition. McGraw-Hill Irwin.
Lua i Stíl Chicago (17ú heag.)PETER, J. Paul. Marketing Management: Knowledge and Skill Ninth Edition. McGraw-Hill Irwin, 2009.
Lua MLA (8ú heag.)PETER, J. Paul. Marketing Management: Knowledge and Skill Ninth Edition. McGraw-Hill Irwin, 2009.
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