@article{oai:hokusei.repo.nii.ac.jp:00002203,
 author = {白鳥, 金吾 and Shiratori, Kingo},
 month = {2017-04-13},
 title = {Motivation Gains during English Language Camps ： A Case Study from Hokkaido, Japan},
 year = {},
 yomi = {シラトリ, キンゴ}
}