Cita APA (7th ed.)

Frissen, V., & Beijer, S. (2015). Playful identities: The ludification of digital media cultures. Amsterdam University Press.

Cita Chicago (17th ed.)

Frissen, Valerie, i Suzan Beijer. Playful Identities: The Ludification of Digital Media Cultures. Amsterdam, [Netherlands]: Amsterdam University Press, 2015.

Cita MLA (9th ed.)

Frissen, Valerie, i Suzan Beijer. Playful Identities: The Ludification of Digital Media Cultures. Amsterdam University Press, 2015.