@misc{indiciae175161f0ab51,
  title = {Incentives affecting behavior changes in the retarded.},
  author = {J Rapp and E A Lemke and J Landis},
  year = {1971},
  doi = {10.1177/001440297103800306},
  url = {https://pubmed.ncbi.nlm.nih.gov/5119945/},
  note = {Source identifier: 5119945}
}