KELLEY, E. J. (1976). Marketing Planning And Competitive Strategy Eugene J. Kelley. Prentice- hall of India.
Lua i Stíl Chicago (17ú heag.)KELLEY, Eugene J. Marketing Planning And Competitive Strategy Eugene J. Kelley. Prentice- hall of India, 1976.
Lua MLA (8ú heag.)KELLEY, Eugene J. Marketing Planning And Competitive Strategy Eugene J. Kelley. Prentice- hall of India, 1976.
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