@misc{indiciaea63299d74123,
  title = {Work: a weak reinforcer.},
  author = {G H Collier},
  year = {1970},
  doi = {10.1111/j.2164-0947.1970.tb02731.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5291225/},
  note = {Source identifier: 5291225}
}