@article{oai:tsuru.repo.nii.ac.jp:00000359,
 author = {上原, 明子},
 issue = {82},
 journal = {都留文科大学研究紀要, 都留文科大学研究紀要},
 month = {Oct},
 pages = {11--28},
 title = {Incidental English Learning of Japanese Elementary School Students by Oral Input in Daily School Life},
 year = {2015}
}