@article{135135,
      recid = {135135},
      author = {Wilen, William W.},
      title = {Teaching and learning through discussion : the theory,  research, and practice of the discussion method /},
      publisher = {C.C. Thomas,},
      address = {Springfield, Ill., U.S.A. :},
      pages = {xvii, 207 p. :},
      year = {1990},
      url = {http://library.usi.edu/record/135135},
}