@article{oai:waseda.repo.nii.ac.jp:00024980,
 author = {Yoshioka, Hideyuki and 吉岡, 英幸},
 journal = {早稲田日本語教育学},
 month = {Feb},
 pages = {1--7},
 title = {日本語教材から見た日本語能力観},
 volume = {9},
 year = {2011}
}