@misc{indiciaeb9f807ac2d4c,
  title = {Reading grade level adjustment and auditory supplementation as techniques for increasing textual comprehensibility.},
  author = {A I Siegel and M R Lautman and J R Burkett},
  year = {1974},
  doi = {10.1037/h0021533},
  url = {https://pubmed.ncbi.nlm.nih.gov/4443475/},
  note = {Source identifier: 4443475}
}