Cita APA (7a ed.)

Deterding, S., Dixon, D., Khaled, R., & Nacke, L. (2011). From game design elements to gamefulness: Defining Gamification. ACM.

Cita Chicago Style (17a ed.)

Deterding, Sebastian, Dan Dixon, Rilla Khaled, y Lennart Nacke. From Game Design Elements to Gamefulness: Defining Gamification. Tampere, Finland: ACM, 2011.

Cita MLA (9a ed.)

Deterding, Sebastian, et al. From Game Design Elements to Gamefulness: Defining Gamification. ACM, 2011.