WEBSTER FREDRICK E. (1974). SOCIAL ASPECTS OF MARKETING. PRENTICE -HALL INTERNATIONAL, INC.
Lua i Stíl Chicago (17ú heag.)WEBSTER FREDRICK E. SOCIAL ASPECTS OF MARKETING. NEW JERSEY: PRENTICE -HALL INTERNATIONAL, INC, 1974.
Lua MLA (9ú heag.)WEBSTER FREDRICK E. SOCIAL ASPECTS OF MARKETING. PRENTICE -HALL INTERNATIONAL, INC, 1974.
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