Martens, M. (2014). Reading and "Gamification": Joining Guilds, Earning Badges, and Leveling Up. Children & Libraries: The Journal of the Association for Library Service to Children. https://doi.org/10.5860/cal.12n4.19
Martens, Marianne. 2014. “Reading and ‘Gamification’: Joining Guilds, Earning Badges, and Leveling Up”. Children & Libraries: The Journal of the Association for Library Service to Children. https://doi.org/10.5860/cal.12n4.19.
Martens, M. Reading and "Gamification": Joining Guilds, Earning Badges, and Leveling Up. Children & Libraries: The Journal of the Association for Library Service to Children, 1 Jan. 2014, doi:10.5860/cal.12n4.19.