@misc{indiciaeb5feda28aeb6,
  title = {User input mode and computer-aided instruction.},
  author = {C S Morrill and N C Goodwin and S L Smith},
  year = {1968},
  doi = {10.1177/001872086801000304},
  url = {https://pubmed.ncbi.nlm.nih.gov/5674358/},
  note = {Source identifier: 5674358}
}