Hitosugi, Claire Ikumi, Matthew Schmidt, and Kentaro Hayashi. 2014. “Digital game–based Learning (DGBL) in the L2 Classroom: The Impact of the UN’s off-the-Shelf Videogame, Food Force, on Learner Affect and Vocabulary Retention”. CALICO Journal 31 (1): 19-39. https://doi.org/10.11139/cj.31.1.19-39.