Hyzy, M., Wardle, B., & Zichermann, G. (2023). Gamification for Product Excellence: Make your product stand out with higher user engagement, retention, and innovation. Packt Publishing.
Chicago-referens (17:e uppl.)Hyzy, Mike, Bret Wardle, och Gabe Zichermann. Gamification for Product Excellence: Make Your Product Stand Out with Higher User Engagement, Retention, and Innovation. Birmingham: Packt Publishing, 2023.
MLA-referens (8:e uppl.)Hyzy, Mike, et al. Gamification for Product Excellence: Make Your Product Stand Out with Higher User Engagement, Retention, and Innovation. Packt Publishing, 2023.
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