@book{ BA37078100,
  author    = "Festinger, Leon and Kelley, Harold H.",
  title     = "Changing attitudes through social contact : an experimental study of a housing project",
  publisher = "Research Center for Group Dynamics, Institute for Social Research, University of Michigan",
  year      = "1951",
  series    = "Research Center for Group Dynamics series",
  number    = "no. 1",
  URL       = "https://ci.nii.ac.jp/ncid/BA37078100"
}