Tham khảo Caral

  1. ↑ Adelaar, Willem (2004). The Languages of the Andes. Cambridge University Press. tr. 2. ISBN 978-1-139-45112-3.
  2. ↑ UNESCO World Heritage Centre.
  3. ↑ Eurekalert.org, "Oldest evidence of city life in the Americas reported in Science, early urban planners emerge as power players" Public release date: 26-Apr-2001 American Association for the Advancement of Science
  4. ↑ NYtimes.com, "Archaeological Site in Peru Is Called Oldest City in Americas" Public release date: 27-Apr-2001 The New York Times