@misc{indiciae345511089845,
  title = {Packaged programs for practitioners: a trial in continuing education.},
  author = {R E Lewis and J R Welser and J J Stockton},
  year = {1973},
  url = {https://pubmed.ncbi.nlm.nih.gov/4119049/},
  note = {Source identifier: 4119049}
}