@misc{indiciae695f3e4cbaad,
  title = {An open system model for psychotherapy evaluation.},
  author = {S A Murrell},
  year = {1971},
  doi = {10.1007/bf01435562},
  url = {https://pubmed.ncbi.nlm.nih.gov/5163669/},
  note = {Source identifier: 5163669}
}