@inbook{ce69c0267ae6408294dffe016ee479eb,
title = "When Did Language Begin?",
abstract = "We find it almost impossible to imagine what it would be like to {"}think{"} about the world without language-either spoken or signed. As language is one of the things that distinguishes the behavior of humans from that of other animals, however, it clearly must have emerged at some time during the course of our evolution. The question is when.",
author = "Iain Davidson and William Noble",
year = "1993",
language = "English",
isbn = "9780702226762",
series = "Illustrated History of Humankind",
publisher = "University of Queensland Press",
pages = "46--52",
editor = "G{\"o}ran Burenhult",
booktitle = "The First humans: human origins and history to 10,000 BC",
}