Schaaf, R. (2014). Making school a game worth playing: Digital games in the classroom. Corwin.
Chicago-Zitierstil (17. Ausg.)Schaaf, Ryan. Making School a Game Worth Playing: Digital Games in the Classroom. Thousand Oaks, California: Corwin, 2014.
MLA-Zitierstil (9. Ausg.)Schaaf, Ryan. Making School a Game Worth Playing: Digital Games in the Classroom. Corwin, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.