Citazione Stile APA (7a Edizione)

Walz, S. P., & Deterding, S. (2014). The gameful world: Approaches, issues, applications. The MIT Press.

Citazione stile Chigago Style (17a edizione)

Walz, Steffen P., e Sebastian Deterding. The Gameful World: Approaches, Issues, Applications. Cambridge, Massachusetts ; London, England: The MIT Press, 2014.

Citatione MLA (9a ed.)

Walz, Steffen P., e Sebastian Deterding. The Gameful World: Approaches, Issues, Applications. The MIT Press, 2014.