@article{oai:ic.repo.nii.ac.jp:00000447,
 author = {布井, 敏郎 and Nunoi, Toshiro},
 journal = {茨城キリスト教大学紀要, Academic Journal of Ibaraki Christian College (Senior Division)},
 month = {Jan},
 note = {5, KJ00000250278},
 pages = {27--46},
 title = {外国語学習開始の最適年齢について},
 volume = {27},
 year = {1993},
 yomi = {ヌノイ, トシロウ}
}