@article{oai:kuis.repo.nii.ac.jp:00000583,
 author = {Park, Siwon},
 journal = {神田外語大学紀要},
 month = {Mar},
 note = {P(論文), 論文, Thesis},
 pages = {27--47},
 title = {Task Difficulty in Language Testing},
 volume = {23},
 year = {2011}
}