Glenn Peoples. How Many Millions Did Amazon Lose on Two Days of 99 Cent Lady Gaga Sales? // Billboard, May 27, 2011.
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Данные представлены согласно информации Nielsen SoundScan на декабрь 2012 г.
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Раздел главы основан на исследованиях: Anita Elberse, Elie Ofek. Octone Records // Harvard Business School, case 507–082; Anita Elberse, Elie Ofek, Caren Kelleher. A&M/Octone Records: All Rights or Nothing? // Harvard Business School, case 511–031.
