@book{ BA6965216X,
  author    = "労働政策研究・研修機構",
  title     = "JILPT調査シリーズ",
  publisher = "労働政策研究・研修機構",
  year      = "2004",
  URL       = "https://ci.nii.ac.jp/ncid/BA6965216X"
}