APA-referens (7:e uppl.)

Folmar, D. (2015). Game it up!: Using gamification to incentivize your library. Rowman & Littlefield.

Chicago-referens (17:e uppl.)

Folmar, David. Game It Up!: Using Gamification to Incentivize Your Library. Lanham: Rowman & Littlefield, 2015.

MLA-referens (8:e uppl.)

Folmar, David. Game It Up!: Using Gamification to Incentivize Your Library. Rowman & Littlefield, 2015.