@article{311568,
      recid = {311568},
      author = {Wolfram, Walt, and Schilling-Estes, Natalie.},
      title = {American English : dialects and variation /},
      publisher = {Blackwell Pub.,},
      address = {Malden, MA :},
      pages = {xv, 452 p. :},
      year = {2006},
      url = {http://library.usi.edu/record/311568},
}