@misc{indiciaea09e1c0d3025,
  title = {A step toward program evaluation.},
  author = {C M Wignall and L C Dick},
  year = {1966},
  doi = {10.1176/ps.17.3.86},
  url = {https://pubmed.ncbi.nlm.nih.gov/5903087/},
  note = {Source identifier: 5903087}
}