Roger Lewin, 35: The origin of agriculture and the first villagers, in Human Evolution: An Illustrated Introduction, 5ª ed., Malden, Massachusetts, John Wiley & Sons, 18 febbraio 2009 [1984], p. 250, ISBN 978-1-4051-5614-1. URL consultato il 20 agosto 2017.
«[...] the Neolithic transition involved increasing sedentism and social complexity, which was usually followed by the gradual adoption of plant and animal domestication. In some cases, however, plant domestication preceded sedentism, particularly in the New World.»