@misc{indiciae60be6032e6e4,
  title = {Programmed instructional materials for patient education.},
  author = {A D Spiegel},
  year = {1967},
  doi = {10.1097/00001888-196710000-00008},
  url = {https://pubmed.ncbi.nlm.nih.gov/6047988/},
  note = {Source identifier: 6047988}
}