@misc{indiciae4b6252e78a06,
  title = {Sustaining behavior with conditioned reinforcement as the only response-produced consequence.},
  author = {J Zimmerman and P V Hanford},
  year = {1966},
  doi = {10.2466/pr0.1966.19.2.391},
  url = {https://pubmed.ncbi.nlm.nih.gov/5912799/},
  note = {Source identifier: 5912799}
}