@misc{indiciae4e25acd57ee0,
  title = {Reference: the linguistic essential.},
  author = {E S Savage-Rumbaugh and D M Rumbaugh and S T Smith and J Lawson},
  year = {1980},
  doi = {10.1126/science.7434008},
  url = {https://pubmed.ncbi.nlm.nih.gov/7434008/},
  note = {Source identifier: 7434008}
}