CUNNINGHAM, W. (1987). MARKETING A MANAGERIAL APPROACH. SOUTH - WESTERN PUB. CO.
Lua i Stíl Chicago (17ú heag.)CUNNINGHAM, W. MARKETING A MANAGERIAL APPROACH. OHIO: SOUTH - WESTERN PUB. CO, 1987.
Lua MLA (9ú heag.)CUNNINGHAM, W. MARKETING A MANAGERIAL APPROACH. SOUTH - WESTERN PUB. CO, 1987.
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