@misc{indiciaed1b6538f7de6,
  title = {Controlled experiments in teaching.},
  author = {C R JOYCE and M WEATHERALL},
  year = {1957},
  doi = {10.1016/s0140-6736(57)92346-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/13464080/},
  note = {Source identifier: 13464080}
}