@article{908740,
      author = {Pellegrini, Anthony D. and Hoch, John, and Symons, Frank  James,},
      url = {http://library.usi.edu/record/908740},
      title = {Observing children in their natural worlds a  methodological primer / [electronic resource] :},
      publisher = {Psychology Press,},
      recid = {908740},
      pages = {xviii, 322 p. :},
      address = {New York :},
      year = {2013},
}