APA (7th ed.) Citation

Ifenthaler, D., Eseryel, D., & Ge, X. (2012). Assessment for game-based learning.

Chicago Style (17th ed.) Citation

Ifenthaler, Dirk, D. Eseryel, and X. Ge. Assessment for Game-based Learning. 2012.

MLA (9th ed.) Citation

Ifenthaler, Dirk, et al. Assessment for Game-based Learning. 2012.