GREGORY, J. R. (1991). Marketing Corporate Image The Company As Your Number One Product. NTC Business Books.
Lua i Stíl Chicago (17ú heag.)GREGORY, James R. Marketing Corporate Image The Company As Your Number One Product. NTC Business Books, 1991.
Lua MLA (8ú heag.)GREGORY, James R. Marketing Corporate Image The Company As Your Number One Product. NTC Business Books, 1991.
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