@misc{indiciae91674bd0ed0b,
  title = {Codes of communication.},
  author = {T Ling},
  year = {1989},
  doi = {10.7748/ns.3.50.29.s39},
  url = {https://pubmed.ncbi.nlm.nih.gov/2509974/},
  note = {Source identifier: 2509974}
}