@misc{indiciae683c7221a9c0,
  title = {Referential communication by chimpanzees (Pan troglodytes).},
  author = {David A Leavens and William D Hopkins and Roger K Thomas},
  year = {2004},
  doi = {10.1037/0735-7036.118.1.48},
  url = {https://pubmed.ncbi.nlm.nih.gov/15008672/},
  note = {Source identifier: 15008672}
}