ENIS, B. M. (1995). Marketing Classics A Selection Of Influential Articles Ben M. Enis, Keith K. Cox, Michael P. Mokwa. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)ENIS, Ben M. Marketing Classics A Selection Of Influential Articles Ben M. Enis, Keith K. Cox, Michael P. Mokwa. Prentice Hall, 1995.
Lua MLA (8ú heag.)ENIS, Ben M. Marketing Classics A Selection Of Influential Articles Ben M. Enis, Keith K. Cox, Michael P. Mokwa. Prentice Hall, 1995.
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