Top Five Startup Tips From Spanx Billionaire Sara Blakely

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Forbes says Spanx's Sara Blakely, of Clearwater, is world's youngest self-made female billionaire

In Her New MasterClass, Self-Made Billionaire Sara Blakely Shares 7 Remarkable Tips for Turning Any Idea Into a Successful Company

How Sara Blakely Turns $5,000 into $1 billion - Biz Epic

Sara Blakely: Spanx a billion, The Independent

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BUS 433 : statistics for managers - Ashford University