@phdthesis{discovery10020064,
          school = {Institute of Education, University of London},
            note = {Thesis: PHD University of London Institute of Education, 1978.},
           title = {An Exploration of Case Study Methods in Evaluating Secondary Schools.},
            year = {1978},
             url = {https://discovery.ucl.ac.uk/id/eprint/10020064/},
          author = {Warren, E. E.}
}