@article{oai:cuc.repo.nii.ac.jp:00002327,
 author = {酒井, 志延 and 中村, 晃 and 相良, 陽一郎 and サカイ, シエン and ナカムラ, アキラ and サガラ, ヨウイチロウ and Sakai, Shien and NAKAMURA, Akira and SAGARA, Yoichiro},
 issue = {1},
 journal = {千葉商大紀要},
 month = {Sep},
 note = {P(論文)},
 pages = {35--47},
 title = {A Study on the Relation between learners' Self-efficacy in English Learning and Improvement of their English Proficiency},
 volume = {48},
 year = {2010}
}