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Lua i Stíl Chicago (17ú heag.)Donaker, Geoff. "Designing Better Online Review Systems: How to Create Ratings That Buyer and Sellers Can Trust." Harvard Business Review .
Lua MLA (9ú heag.)Donaker, Geoff. "Designing Better Online Review Systems: How to Create Ratings That Buyer and Sellers Can Trust." Harvard Business Review, .
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