Eurekalert.orgLưu trữ ngày 13 tháng 12 năm 2017 tại Wayback Machine, "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
nytimes.com
NYtimes.com, "Archaeological Site in Peru Is Called Oldest City in Americas" Public release date: 27-Apr-2001 The New York Times
web.archive.org
Eurekalert.orgLưu trữ ngày 13 tháng 12 năm 2017 tại Wayback Machine, "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