Bartle, R. A., & Bartle, R. A. (2016). MMOs from the Inside Out: The History, Design, Fun, and Art of Massively-multiplayer Online Role-playing Games (1st ed. 2016.). Apress : Imprint: Apress.
Chicago-Zitierstil (17. Ausg.)Bartle, Richard A., und Richard A. Bartle. MMOs from the Inside Out: The History, Design, Fun, and Art of Massively-multiplayer Online Role-playing Games. 1st ed. 2016. Berkeley, CA: Apress : Imprint: Apress, 2016.
MLA-Zitierstil (8. Ausg.)Bartle, Richard A., und Richard A. Bartle. MMOs from the Inside Out: The History, Design, Fun, and Art of Massively-multiplayer Online Role-playing Games. 1st ed. 2016. Apress : Imprint: Apress, 2016.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.