Ries Eric. (2011). The loan startup: How constant Innovation creates successful business. Penguin Grp.
Chicago-viite (17. p.)Ries Eric. The Loan Startup: How Constant Innovation Creates Successful Business. London: Penguin Grp, 2011.
MLA-viite (9. p.)Ries Eric. The Loan Startup: How Constant Innovation Creates Successful Business. Penguin Grp, 2011.
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