@misc{indiciae9cc0880c237b,
  title = {Three psychological scaling methods applied to language development.},
  author = {D Sherman and F H Silverman},
  year = {1968},
  doi = {10.1044/jshr.1104.837},
  url = {https://pubmed.ncbi.nlm.nih.gov/5719240/},
  note = {Source identifier: 5719240}
}