@misc{indiciae0902da5abe47,
  title = {Modification of perception by classical conditioning procedures.},
  author = {C R Chapman and B W Feather},
  year = {1972},
  doi = {10.1037/h0032451},
  url = {https://pubmed.ncbi.nlm.nih.gov/5025738/},
  note = {Source identifier: 5025738}
}