@misc{indiciaedeb406193bed,
  title = {Learning can be fun.},
  author = {R A Lewis},
  year = {1971},
  doi = {10.14219/jada.archive.1971.0202},
  url = {https://pubmed.ncbi.nlm.nih.gov/5280047/},
  note = {Source identifier: 5280047}
}