@book{ BA31010261,
  author    = "Armstrong, David G. and Henson, Kenneth T. and Savage, Tom V.",
  title     = "Teaching today : an introduction to education",
  publisher = "Merrill",
  year      = "1997",
  edition   = "5th ed",
  URL       = "http://ci.nii.ac.jp/ncid/BA31010261"
}