@article{oai:waseda.repo.nii.ac.jp:00012173,
 author = {Jimbo, Hisatake and 神保, 尚武},
 journal = {早稲田商学=The Waseda commercial review},
 month = {Feb},
 pages = {189--207},
 title = {クラッシェンの言語習得理論の諸問題},
 volume = {333号},
 year = {1989}
}