@article{222596,
      author = {Stigler, James W. and Hiebert, James.},
      url = {http://library.usi.edu/record/222596},
      title = {The teaching gap : best ideas from the world's teachers  for improving education in the classroom /},
      publisher = {Free Press,},
      recid = {222596},
      pages = {xiv, 210 p. :},
      address = {New York :},
      year = {1999},
}