@misc{indiciae01723ea8cf06,
  title = {Programmed learning--some practical and theoretical aspects.},
  author = {W R Dunn},
  year = {1971},
  doi = {10.1177/003693307101600109},
  url = {https://pubmed.ncbi.nlm.nih.gov/5564867/},
  note = {Source identifier: 5564867}
}