1. Business model generation: a handbook for visionaries, game changers, and challengers Osterwalder, Alexander. Hoboken, NJ : Wiley, c2010. MDIT330
2. The four steps to the epiphany: successful strategies for products that win Blank, Steven G. (Steven Gary), [California?] : [Steve Blank?], [2013] MDIT330
3. The metaverse entrepreneur: a practical guide to building a business in virtual reality Preston, Martin. [S.l.] : Independently published, 2023. MDIT330
