@article{934205,
      author = {Cummins, Sunday, and Hiebert, Elfrieda H.,},
      url = {http://library.usi.edu/record/934205},
      title = {Unpacking complexity in informational texts : principles  and practices for grades 2-8 /},
      recid = {934205},
      pages = {1 online resource (161 pages)},
}