@misc{indiciae97864b90dc3b,
  title = {Classical conditioning in instrumental learning.},
  author = {I M LIU},
  year = {1963},
  doi = {10.1037/h0047051},
  url = {https://pubmed.ncbi.nlm.nih.gov/13931024/},
  note = {Source identifier: 13931024}
}