Trích dẫn APA

Blank, S. G. G. The four steps to the epiphany: Successful strategies for products that win /Steve Blank. Steve Blank.

Trích dẫn kiểu Chicago

Blank, Steven G.(Steven Gary),author. The Four Steps to the Epiphany: Successful Strategies for Products That Win /Steve Blank. Steve Blank.

Trích dẫn MLA

Blank, Steven G.(Steven Gary),author. The Four Steps to the Epiphany: Successful Strategies for Products That Win /Steve Blank. Steve Blank.

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