The Chimps Who Learned to Say ‘Mama’ - The New York Times
- The Chimps Who Learned to Say ‘Mama’ The New York Times
- Chimp conversations can take on human-like chaos Popular Science
- Chimpanzees Take Turns in Fast-Paced Conversations, Just Like Humans Do Smithsonian Magazine
- Chimpanzees gesture back and forth quickly like in human conversations EurekAlert