TY  - RPRT
TI  - Referential communication by chimpanzees (Pan troglodytes).
AU  - David A Leavens
AU  - William D Hopkins
AU  - Roger K Thomas
PY  - 2004
DO  - 10.1037/0735-7036.118.1.48
UR  - https://pubmed.ncbi.nlm.nih.gov/15008672/
ID  - 15008672
ER  -