APA (7th ed.) Citation

de Freitas, S., Liarokapis, F., & Ma, M. (2011). Serious Games: A New Paradigm for Education? Springer.

Chicago Style (17th ed.) Citation

de Freitas, Sara, F. Liarokapis, and M. Ma. Serious Games: A New Paradigm for Education? Springer, 2011.

MLA (9th ed.) Citation

de Freitas, Sara, et al. Serious Games: A New Paradigm for Education? Springer, 2011.