@article{30118,
      url = {http://library.usi.edu/record/30118},
      title = {Why do people buy? A close look at selling, the great  unsolved problem of American business,},
      publisher = {McGraw-Hill},
      recid = {30118},
      pages = {270 p.},
      address = {New York,},
      year = {1953},
}