@article{oai:tsuda.repo.nii.ac.jp:00000028,
 author = {松本, 祐子 and Matsumoto, Yuko},
 journal = {津田塾大学紀要, Journal of Tsuda College},
 month = {Mar},
 pages = {247--260},
 title = {Students' First Language (L1) Use in the English Classroom},
 volume = {45},
 year = {2013},
 yomi = {マツモト, ユウコ}
}