Bernhardt, K. L. (1988). Cases in marketing management (4ª ed.). Business.
Lua i Stíl Chicago (17ú heag.)Bernhardt, Kenneth L. Cases in Marketing Management. 4ª ed. Business, 1988.
Lua MLA (9ú heag.)Bernhardt, Kenneth L. Cases in Marketing Management. 4ª ed. Business, 1988.
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