@article{173569,
      author = {Kopp, Claire B. and Bean, Donne L.},
      url = {http://library.usi.edu/record/173569},
      title = {Baby steps : the "whys" of your child's behavior in the  first two years /},
      publisher = {W.H. Freeman,},
      recid = {173569},
      pages = {xix, 279 p. :},
      address = {New York :},
      year = {1994},
}