@book{CTT100644310,
  author = {Stefan Kaiser and Yasuko Ichikawa and Noriko Kobayashi and Hilofumi Yamamoto},
  title = {Japanese: A Comprehensive Grammar, the Second Edition},
  publisher = {Routledge},
  year = 2012,
}

@book{CTT100576199,
  author = {Stefan Kaiser and Yasuko Ichikawa and Noriko Kobayashi and Hilofumi Yamamoto},
  title = {Japanese: A Comprehensive Grammar},
  publisher = {Routledge},
  year = 2000,
}

@article{CTT100576204,
  author = {市川 保子 and 山元啓史},
  title = {コンピュータによる既習者のための事前診断テスト},
  journal = {日本語教育},
  year = 1992,
}