@misc{indiciae1e6221759682,
  title = {Contingency interaction analysis in psychotherapy.},
  author = {M L Canfield and W R Walker and L G Brown},
  year = {1991},
  doi = {10.1037//0022-006x.59.1.58},
  url = {https://pubmed.ncbi.nlm.nih.gov/2002143/},
  note = {Source identifier: 2002143}
}