@misc{indiciae8ef2eae1afff,
  title = {Instrument construction: part I.},
  author = {R P Lederman and S Worsham},
  doi = {10.1097/00005721-199407000-00013},
  url = {https://pubmed.ncbi.nlm.nih.gov/7934704/},
  note = {Source identifier: 7934704}
}