@article{1554110,
      recid = {1554110},
      author = {Grootenboer, Peter, and Edwards-Groves, Christine, and  Ronnerman, Karin,},
      title = {Middle leadership in schools : a practical guide for  leading learning /},
      pages = {1 online resource (171 pages) :},
      url = {http://library.usi.edu/record/1554110},
}