@article{oai:ritsumei.repo.nii.ac.jp:00011428,
 author = {PEREZ, Mario Alexander},
 journal = {ポリグロシア, Polyglossia},
 month = {Mar},
 pages = {139--148},
 title = {Activities for Listening & Speaking},
 volume = {26},
 year = {2014}
}