Cooper, B., Vlaskovits, P., & Blank, S. G. The Entrepreneur's Guide to Customer Development: A Cheat Sheet to The Four Steps to the Epiphany. Product and Market Development.
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Chicago-čujuhus (17. p.)
Cooper, Brant, Patrick Vlaskovits, juo Steven Gary Blank. The Entrepreneur's Guide to Customer Development: A Cheat Sheet to The Four Steps to the Epiphany. lugar de publicación no identificado: Product and Market Development.
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MLA-čujuhus (9. p.)
Cooper, Brant, et al. The Entrepreneur's Guide to Customer Development: A Cheat Sheet to The Four Steps to the Epiphany. Product and Market Development.
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