@misc{indiciae5fc3ad344208,
  title = {A thinking aid.},
  author = {B F Skinner},
  year = {1987},
  doi = {10.1901/jaba.1987.20-379},
  url = {https://pubmed.ncbi.nlm.nih.gov/16795707/},
  note = {Source identifier: 16795707}
}