@article{325195,
      recid = {325195},
      author = {Leinhardt, Samuel.},
      title = {Social networks : a developing paradigm /},
      publisher = {Academic Press,},
      address = {New York :},
      pages = {xxxiv, 465 p. :},
      year = {1977},
      url = {http://library.usi.edu/record/325195},
}